# German Antiguerrilla Operations in the Balkans (1941-1944)/Chapter 5

CHAPTER 5
THE EARLY MOVEMENT AND AXIS COUNTERMEASURES
The political allegiances of the resistance movement had little influence on the military operations conducted by the occupying powers. Rather, everyone fighting against the occupation forces was considered a threat to their hold on the Balkans. True, the methods used and the ultimate objectives differed from one group to the other. However, as far as the Italians, Germans, and Bulgarians were concerned, all in arms against them were enemies, whether they wore the royal crest of a sovereign in exile, the hammer and sickle, or no insignia whatever.
I. Yugoslavia
Armed opposition on a significant scale received its start in Yugoslavia. However, any consideration of this movement would be incomplete without distinguishing between the Pan-Serb, monarchical group of the former Col. Draja Mihailovitch and the communist-led effort of Josip Broz, or Tito. It was the former that first came to the attention of the Allied world, at the time German domination of the Continent was almost complete and Soviet forces were retreating from western Russia.
Mihailovitch called his irregulars "Chetniks," from the title of a Serb nationalist organization that had resisted the Turks, fought well in World War I, and since existed as a reserve force to be called up when needed. Costa Pecanatch, the aging World War I leader, went over to the Neditch government at the outset of the occupation, leaving Mihailovitch with those remnants willing to resist the occupation forces and collaborationists. The Mihailovitch movement quickly gained momentum during the early summer of 1941, and liaison was established with the government-in-exile of King Peter. A short time later Mihailovitch was first named commander of the resistance forces within Yugoslavia, and then minister of defense of the royal government-in-exile.
Chetnik policy called for the organization of strong underground forces in Serbia for the day when they might rise in conjunction with Allied landings on the Balkan Peninsula. Mihailovitch, himself, had been appalled by the execution of some 35,000 Serb hostages for Chetnik activities in World War I, and was determined to avoid repeti​tion of any such reprisals for a premature rising of the forces under his command. Thus, Chetnik operations were generally restricted to small-scale actions and sabotage.
It was the communist irregulars who adopted the name of Partisan and made it synonymous with guerrilla. Under Tito, born Josip Broz in Croatia, converted to communism while a prisoner of war of the Russians at the time of the Red Revolution, and Secretary General of the Communist Party of Yugoslavia since 1937, the Partisan movement received its start in Belgrade immediately after the surrender to the Germans. In August 1941 Tito moved his headquarters into the field and took over command of the growing Partisan forces. The antiroyalist policy of the Partisans and anticommunist attitude of the Chetniks soon led to a fratricidal conflict between the two, a cleavage the Germans were quick to turn to their own advantage. Whereas the Chetniks comprised mostly local units to be called up as needed, the Partisans had a great number of large and active mobile units capable of moving about the country and not tied down to any particular locality. As a consequence, the Partisans were not as hesitant as the Chetniks to engage in operations for which the occupying forces would exact severe reprisals, a development that incurred further the enmity of the Chetniks. A conflict within a conflict soon developed, with one Yugoslav force attacking the other while that force was already engaged against occupation troops.
In some cases the Partisans were given credit for Chetnik attacks against the occupation forces and their auxiliaries; on the other hand, the Chetniks were credited with successful Partisan forays. To complicate matters further, there were also guerrilla bands operating under no other authority than their own. Thus, German references to Partisans did not necessarily mean the forces of Tito, but rather the Yugoslav resistance forces in general, regardless of political sympathies. As well as the European Axis came to know them, it could not always distinguish one group from the other, and came to use the word Partisan in its broadest sense.
The most important guerrilla operation in 1941 took place against the Italians in Montenegro. Ruggedly independent, the Montenegrins on 13 July swarmed down in well-coordinated attacks on the Italian garrisons scattered throughout their mountain state. Taken by surprise, the occupation forces were destroyed or thrown back on their major garrison towns and communications centers. Returning with strong ground, naval, and air forces, the Italians required almost a year to put down the rising, and managed to accomplish it only by enlisting the aid of the Chetniks. Stipulations in the agreement with local Chetnik leaders required the Italians to restrict themselves to the garrison towns and main communication and transportation lines. ​In turn, the Chetniks maintained control over the countryside and kept it free of Partisans, drawing on Italian stocks for arms and ammunition.
This general rising cost the Montenegrins dearly—15,000 dead and wounded and an additional 10,000 of the sparse mountain population shipped off to forced labor. The arrangement with the Chetniks also set the pattern for the Italian occupation—troops seldom moved out of the garrison towns, and then only along the main roads and in strength, accompanied by armored vehicles and often under air cover.
One other major countermeasure by the Italian occupation forces against the irregulars was undertaken in July of 1942 when Generale di Corpo D'Armata (Lieutenant General) Mario Robotti launched a drive against the Partisans in Slovenia. Committing 7 army divisions, 2 Blackshirt battalions, and Slovene auxiliaries, General Robotti managed to surround the enemy. Several thousand casualties were inflicted on the Partisans, and the survivors were routed. The Partisan movement in Slovenia in this operation suffered a setback from which it did not recover for months.
Guerrilla activities against the Germans in Yugoslavia commenced shortly after the cessation of formal hostilities. However, in the beginning, open resistance to the German forces was on a smaller scale than in the Italian-occupied areas, and the guerrillas conducted themselves more cautiously. With the departure, by late June 1941, of the bulk of the combat troops for Operation BARBAROSSA, the WB Southeast reported an increasing number of sabotage incidents. Road and railroad bridges were blown; telephone and telegraph lines were cut; trains derailed; German military vehicles, traveling either alone or in convoy, fired on or destroyed; and isolated detachments guarding industrial and military installations attacked. During July and August there were also daily attacks on Serbian police posts to obtain weapons and on villages to obtain food. Standing crops were burned, banks robbed, and a general state of uncertainty and unrest created.
A number of small-scale operations by the 704th, 714th, 717th, and 718th Infantry Divisions, dispersed over Serbia and the German zone of interest in Croatia, resulted in a large number of casualties and arrests, but accomplished little in effectively curbing the guerrilla movement. Nor did the shooting of hostages or burning of homes of suspects and whole communities suspected of sheltering the guerrillas achieve the desired results. By 5 September the WB Southeast realized that the situation could not be mastered with the forces at hand and ordered the 125th Infantry Regiment (Separate) from the Salonika area to Belgrade.
It was now obvious that a strong, well-organized, and adequately armed revolt was underway in northwestern Serbia, and that the ​remainder of German-occupied Serbia was seriously threatened. The spreading disorders were also affecting the supply of vital raw materials, to the extent that in the third quarter of 1941 the destruction of installations in the Bor mining area (northeast of Nish) caused a production loss of nearly a month's requirement of copper for the German war industries. In view of this increasingly critical situation, the Armed Forces Commander, Southeast, was forced to concentrate his meager and scattered forces for the defense of those cities, industrial installations, and transportation lines considered most vital to the German occupation. Further, he requested that the Armed Forces High Command have established a unified command for operations in Serbia under the commander of the XVIII Mountain Corps, General der Gebirgstruppen (Lieutenant General) Franz Boehme. Marshal List further recommended that General Boehme be assigned a combat infantry division and armored support, to supplement the divisions immediately available.
In response to this request, on 16 September Hitler issued a directive that charged Marshal List with suppressing the revolt in the southeast. To accomplish this, he was to place General Boehme in complete charge of operations in Serbia and the adjacent areas in which the irregulars had established themselves. General Boehme was to have command of all troops in the area and of any others that might be moved in; all military and civil authorities were required to carry out General Boehme's orders insofar as they pertained to his mission. The Army High Command was ordered to reinforce the troops in Serbia by one infantry division, armored trains, captured tanks, and further security forces; other captured tanks and security troops were to be sent to Croatia. Another infantry division from the Eastern Front was to be transferred to Serbia when it became available. The Hungarian, Romanian, and Bulgarian forces could be called upon to assist in the operations with the permission of the Armed Forces High Command; the use of Croatian forces available in the German zone of interest adjacent to the Serbian border was approved. The Italians had been informed of the contemplated operations and had been asked to cooperate. In addition, the German Foreign Office was simultaneously to carry out a political offensive in cooperation with the puppet and allied governments against communist centers in the Balkan countries.
Implementation of this directive followed swiftly. Three days later General Boehme moved with his headquarters from Salonika and assumed command in Belgrade, and less than one week following this the 342d Infantry Division arrived from Germany.
A series of vigorous offensive operations begun by General Boehme succeeded in quelling the open revolt in western Serbia and inflicting ​over 2,000 casualties on the guerrillas by mid-December. For these operations, General Boehme committed the 342d Infantry Division; the 125th Infantry Regiment (Separate); the 113th Infantry Division, which had arrived from Germany late in November; and the 704th and 714th Infantry Divisions. The guerrillas, however, were not annihilated; large numbers fled into the more mountainous regions and into Croatia, where a new center of open revolt was soon formed.
As of 25 October, Marshal List had been forced to relinquish his duties because of illness, and General der Pioniere (Lieutenant General) Walter Kuntze was appointed acting Armed Forces Commander, Southeast. In early December orders were received to move the XVIII Mountain Corps, the only tactical corps headquarters in the southeast, to Germany. General Boehme's command functions in Serbia were transferred to the commander of the LXV Corps Command, General der Artillerie (Lieutenant General) Paul Bader.
This loss was shortly followed by another, when the serious situation in Russia made necessary the transfer of both the 342d and 113th Infantry Divisions by the end of January 1942. This reduction of forces prompted the German Armed Forces High Command to request the Bulgarians to move troops into southeastern Serbia. The Bulgarians assented and immediately shifted their I Corps from Thrace. Since it was occupying that part of Serbia allocated as an occupation zone of the Germans, the Bulgarian I Corps later came under the operational control of the German Military Commander, Serbia.
The Bulgarian command in Yugoslavia had a pacification problem similar to that of the Germans. Consequently, the Bulgarians undertook a number of antiguerrilla operations on their own initiative, informing the Germans through liaison officers of the results of their efforts. In general, these were so savage as to quell the growth of any resistance movement of significance until late the following year.
Croatia, with its own armed forces, had little success in putting down the spreading Partisan movement within its borders during late 1941. By the end of the year, additional German troops had crossed the borders of the new state into the German zone of interest in order to cooperate with the Ustascha and Croat national forces in hunting down the Partisans in the southeastern part of the country. Resistance to the Croat troops was intensified by their persecution of the Serbian minority. The Italian Second Army was of little help in restoring order; Italian units in the area assisting the Germans and Croats showed more interest in occupying important transportation and communication centers than in clearing Croatia of the guerrillas.
With Serbia quiet and the guerrilla forces active in their zone of interest in Croatia, the Germans planned a large-scale operation ​designed to annihilate the guerrillas in place or drive them into strong Italian blocking forces to be brought up to the Italian side of the demarcation line. Planned for mid-January 1942, the operation would have the advantage of cold weather, inconvenient for the Germans but disastrous for the guerrillas, who lacked proper clothing and equipment for operations in the snow. Also, the 342d Division would be available, just prior to its departure for Russia.
Well planned and typical of antiguerrilla measures of the period, the operation was conducted from 15 to 26 January, with the 342d and 718th Infantry Divisions, as well as Croatian national forces, participating. guerrillas were estimated at 4,000, concentrated about Sarajevo and Visegrad and the area to the north. Meeting strong resistance, the Germans suffered a total of 25 dead, 131 wounded, and almost 300 cases of frostbite, against 521 guerrilla dead and 1,331 captured. Booty included 855 rifles, 22 machine guns, 4 field pieces, 600 head of livestock, and 33 draft animals. A tactical success, the operation failed to achieve its purpose when the Italian forces against which the guerrillas were to be driven did not arrive in time to prevent the escape of large numbers of the guerrillas into the Italian zone of interest in Croatia.
Reports from German commanders who had participated indicated that the Croatian troops could perform satisfactorily only when integrated with German units, and that the Croat officers and noncommissioned officers lacked training and tactical ability. The escape of entire guerrilla units also made obvious the need for a combined command, with authority over all German, Italian, Croatian, and other forces participating. On one occasion, during the operation, Italian airmen bombed a German-held village, whereupon the Germans requested Italian air support be withdrawn. Another mistake was the assignment of Ustascha troops to areas populated mainly by Serbs. Finally, the understrength German divisions (two regiments of infantry rather than the normal three) in the "700 series" in the southeast lacked personnel and staying power for sustained operations against strong guerrilla forces.
Sharp fighting at Valjevo in February caused the Germans almost 500 casualties, as against over 3,500 guerrillas killed in action or shot in reprisal. Lacking troops, it was obvious that General Kuntze would require the assistance of the Italians and Croatians if his meager forces in Croatia were to quell the disorders in the German zone of interest.
A trip to Hitler's headquarters and to Italy was instrumental in securing approval for a combined German-Italian-Croatian operation to clear east Bosnia. General Bader, now commanding all German forces and the administrative area in Serbia, was named task force commander, under operational control of the Italian Second Army for ​the period of the operation. His force was to consist of three Italian divisions, the German 718th Infantry Division, German units from Serbia, and Croatian national troops. Extending from 20 April to 3 May, the operation was considered a success from the German standpoint, with 168 enemy dead, 1,309 prisoners taken, and stocks of weapons, ammunition, and equipment captured. However, large numbers of guerrillas managed to escape through the Italian units assigned to block their flight and to make their way into the Italian zone of interest in Croatia. Task Force Bader was disbanded upon conclusion of the operation, and its commander returned to Serbia.
Another operation, to clear west Bosnia, was scheduled for June. The task force commander, Generalmajor (Brigadier General) Friedrich Stahl, commanding the 714th Infantry Division, organized his combat elements around three German infantry battalions with artillery support and two Croatian mountain brigades. No exact figures on casualties were given, but the cost to the guerrillas was high and the undertaking was regarded as a success by the Germans. The lack of experience and tactical ability on the part of the Croat troops were made glaringly obvious during the operation, when the two mountain brigades broke in disorder and German troops had to strengthen them.
Following the conclusion of the operation in west Bosnia, the divisions in Serbia and Croatia were redisposed. While the 718th Infantry Division remained in east Bosnia, the 714th Infantry Division was assigned to west Bosnia. The 704th Infantry Division remained in eastern Serbia, and the 717th Infantry Division was shifted from southwestern to northwestern Serbia. In turn, the 7th SS Mountain Division (Prinz Eugen), recently formed with ethnic German personnel from Yugoslavia and Romania, was assigned the area evacuated by the 717th Division.
The modest successes of the recent German operations in Bosnia were offset at this time by the withdrawal of the Italian garrisons disposed along the Italian side of the German-Italian demarcation line. The military vacuum created in the area by this withdrawal was immediately used to advantage by the guerrillas, who now had no occupation force with which to contend. The withdrawal was in accordance with an earlier Italian decision to reduce their Second Army garrisons and relinquish control of the interior of Croatia to Croat national forces. To this end, the Italian command had divided its zone of interest into three areas, numbered from one to three, and roughly parallel to the demarcation line and the coast. The third zone, adjoining the German area of interest, was abandoned first, despite German protests that guerrilla activities would increase.
​A German recapitulation of casualties sustained by the Yugoslav guerrillas from the beginning of the occupation to July 1942 estimated the total at 45,000 dead, with thousands more sent off to forced labor in Germany and occupied areas as far away as Norway, or detained in internment camps. In addition to the arrestees shipped out of the country, the Germans added a large number of former Yugoslav officers as a security measure, whether or not any involvement with the guerrillas could be proved against them.
The German forces in Croatia and Serbia carried on a series of small-scale operations throughout the remainder of the year without achieving any marked success in eliminating the guerrilla movement. There was an increase in troop strength when the 187th Reserve Division arrived in Croatia by December. (Chart 2.) In October, a new
CHART No. 2—GERMAN GROUND FORCES IN OCCUPIED GREECE AND YUGOSLAVIA AS OF 1 DECEMBER 1942
Chart 2.
headquarters, that of Commander of German Troops in Croatia, under Generalleutnant (Major General) Rudolf Lueters, was created; however, this headquarters did not become operational until shortly after the end of the year.
II. Greece
The Greek resistance movement, like the Yugoslav, was divided along political lines between the groups adhering to the royal government-in-exile and those led or strongly influenced by communists. In Greece the former were led by a Colonel Zervas, a retired officer of the Greek Regular Army; the latter, by a Colonel Sarafis, dismissed from the Regular Army for political activities in January 1935. The ​Zervas organization, known as EDES (Greek Democratic National League), was restricted to the mountains of Epirus in northwestern Greece; ELAS (Greek People's Liberation Army) operated in the rest of the country. While EDES maintained contact with the Greek Government-in-Exile, ELAS functioned under EAM (National Liberation Front), a coalition of left-wing parties with a hard core of Communists. Another guerrilla group, socialist in nature and associated loosely with ELAS, was known as EKKA (National and Social Liberation); it was led by a Colonel Psarros and operated in central Greece.
Unlike those in Yugoslavia, the Greek guerrillas undertook no operations of importance in 1941. For their part, the Germans were more concerned with fortifying Crete, pursuing their air effort in the eastern Mediterranean from Greek bases, and getting all combat forces that could be spared to the more active theaters of war. In late October the 5th Mountain Division was moved from Crete to Germany, being replaced by the weak 164th and 713th Infantry Divisions from the Athens and Salonika areas; these two divisions were then disbanded to form Fortress Division, Crete. The garrison on Crete received further reinforcement in the 125th Infantry Regiment (Separate), moved down from Serbia, where it had proved itself in heavy antiguerrilla fighting.
An example of guerrilla operations in Greece in 1942 is provided by an attack of the Zervas group on an Italian supply column on the Yannina–Arta road during the summer. (Map 4.) This completely successful attack, in which approximately one hundred guerrillas annihilated a heavily armed force of sixty men and captured or destroyed, a large stock of ammunition and gasoline, was carefully prepared and vigorously executed. The attack was made under difficult conditions, in that Italian forces were in control of the area and had held it for more than a year, allowing them ample opportunity to recruit informants, know the population well enough to detect new arrivals, and reconnoiter the terrain. In addition, the Italians were amply supplied with signal equipment, automatic weapons, and armored vehicles, while the guerrillas had not yet captured any appreciable number of arms or received any substantial supplies from the Allies. Except for a few machineguns and mines, the only weapons of the attackers were rifles and dynamite.
After several weeks of studying Italian dispositions and movements in the area, the guerrillas decided that an attack on the heavily loaded supply column regularly carrying gasoline and ammunition from Yannina to Arta offered the best prospect of success. Accordingly, the guerrilla command chose a defile along the road, out of sight of any inhabited locality, where rocky ledges on either side offered cover to ​ambushers. Mines could be used to stop the lead vehicle, while a bridge to the rear could be blown to block the column's withdrawal.
On the day of the attack, the guerrillas occupied their hiding places before daylight and waited throughout the day. Telephone and telegraph poles along the road had been cut almost through, so that they could be pulled down with little effort just prior to the action, effectively eliminating any wire communication between the garrisons at Arta and Yannina. Large boulders had been rolled into position on the higher ledges and so placed as to require only a slight pressure to send them tumbling down onto the column halted below. The few machineguns were sited to allow enfilading fire the length of the column, while the gun crews had the protection of the stone ledges against flat trajectory fire from below.
The Italian column appeared at 1600 and was halted exactly as planned when the lead vehicle, a tank, was disabled by mines. The last vehicle, also a tank, was trapped when the bridge behind it was blown a minute later. The column commander became a casualty almost immediately, and the alarmed troops added to the confusion by firing their automatic weapons blindly at the ledges above. The only organized resistance, which caused a number of casualties to the attackers, came from the crew of the tank at the tail of the column; this vehicle was soon put out of action by a dynamite charge. After raking the column repeatedly with heavy fire, the guerrillas swarmed down onto the roadway and slaughtered the few dazed Italians remaining; no prisoners were taken. The supplies carried by the column were quickly loaded onto pack animals brought up for the purpose, while roadblocks secured the attackers against surprise by relief columns from Arta or Yannina.
As planned by the attackers, approaching darkness made pursuit impossible. A motorcycle platoon sent out from Arta to investigate the disruption of wire communications was stopped by fire at the roadblock south of the site of the ambush and no further relief was attempted until morning, by which time the guerrillas were safely away.
Although the supply column had been heavily armed, the Italian commander had made a mistake that was often to cost the occupation forces heavily—he had followed a fixed pattern in moving critical supplies along the same route at regular intervals, making it possible for the guerrillas to determine the schedule, the strength of the escort, and observe the practice of having the only armored vehicles at the head and tail. Such successful attacks emboldened the resistance forces and inclined recruits to join their ranks or to assist them in various other ways, such as reporting troop movements.
During July and August, Fortress Division Crete was sent to Africa, and redesignated the 164th Light Africa Division. In its place, the ​22d Airborne Division was moved in from Russia and assigned to garrison the island fortress.
On 8 August, the acting Armed Forces Commander, Southeast, General Kuntze, was relieved by Generaloberst (General) Alexander Loehr. General Loehr, a Luftwaffe officer, had been in command of the Fourth Air Force in Russia before receiving his new appointment as commander in the Balkans; he had also commanded the task force which captured Crete in May 1941.
Guerrilla operations in Greece were not restricted to ambushes. Sabotage, particularly along the vital Athens–Salonika rail line, also played an important part in hampering the supply of the occupation forces and tying down units to perform security duties. The most significant sabotage operation was executed on 25 November, when a small guerrilla force overpowered Italian guards and blew up the Gorgopotamos Bridge, some hundred miles north of Athens. This successful operation not only halted the flow of supplies until repairs could be effected, but led to severe criticism of the Italians by the Germans and made it necessary for the Germans to take over the security of a long stretch of this rail line in Italian-occupied territory, a strain on the already insufficient German forces and a rebuff to Italian pride.
Additional troops were moved into the Greek area in December, as a result of the Allied landings in Africa one month earlier. The threat presented by United States and British forces to his position in the eastern Mediterranean prompted Hitler shortly afterward to direct immediate reinforcements to be sent to General Loehr. Accordingly, the 11th Luftwaffe Field Division moved into Attica, north of Athens. Though the original purpose in sending the 11th Field Division to Greece had been to replace the 22d Airborne Division, the worsening strategic situation required the retention of both divisions. As a result, the 11th Field Division took over responsibility for a considerable area of Attica and the 22d Division remained as a mobile and potent striking force to counter possible Allied landings on Crete.
By the end of 1942, the Greek resistance forces were still in the process of formation, having no centralized command. While Chetniks and Partisans in Yugoslavia had already established higher headquarters to direct operations, and were receiving quantities of supplies from the British forces in the Middle East, the Greek resistance units were recruiting personnel and leaders of such stature as to command the respect and win the support of the population.
* ↑ On 1 March the headquarters of the LXV Corps Command and the Military Commander, Serbia were merged.
* ↑ Luftwaffe field divisions were composed of Air Force personnel. They were organized as Army divisions and used in an infantry role.