The Battle of Guillemont (3–6 September 1916) was an attack by the Fourth Army on the village of Guillemont.
 The village is on the D 20 running east to Combles and the D 64 south-west to Montauban.
 Longueval and Delville Wood lie to the north-west and Ginchy to the north-east.
 The village was on the right flank of the British sector, near the boundary with the French Sixth Army.
 The Fourth Army had advanced close to Guillemont during the Battle of Bazentin Ridge (14–17 July) and the capture of the village was the culmination of British attacks which began on 22/23 July.
 The attacks were intended to advance the right flank of the Fourth Army and eliminate a salient further north at Delville Wood.
 German defences ringed the wood and had observation over the French Sixth Army area to the south, towards the Somme river.
The Capture of Trônes Wood (8–14 July) was an action in the First World War fought by the British Fourth Army and the German 2nd Army, during the Battle of the Somme.
 Trônes Wood lay on the northern slope of Montauban ridge, between Bernafay Wood and Guillemont.
 The wood dominated the southern approach to Longueval and Trônes Alley, a German communication trench between Bernafay Wood and the northern tip of Trônes Wood to Guillemont.
 A light railway ran through the centre, which was in a dip formed by the east end of Caterpillar Valley sloping away to the west.
 The wood was pear-shaped, with a base about 400 yd wide on Montauban ridge, the rest of the wood running north for about 1400 yd , coming to a point on a rise towards Longueval village.
The Russo–Japanese War (Russian: Русско-японская война , "Russko-yaponskaya voina"; Japanese: 日露戦争 "Nichirosensō"; 1904–05) was fought between the Russian Empire and the Empire of Japan over rival imperial ambitions in Manchuria and Korea.
 The major theatres of operations were the Liaodong Peninsula and Mukden in Southern Manchuria and the seas around Korea, Japan and the Yellow Sea.
The Battle of Épehy was a battle of the First World War fought on 18 September 1918, involving the British Fourth Army (under the command of General Henry Rawlinson) against German outpost positions in front of the Hindenburg Line.
The village of Épehy was captured on 18 September by the 12th (Eastern) Division.
The Battle of the Hills (French: "Bataille des Monts" ) also known as the Battle of the Hills of Champagne and the Third Battle of Champagne, was a battle of the First World War that was fought from April–May 1917.
 The French Fourth Army offensive against the German 4th Army was intended to be auxiliary to that of the "Groupe d'armées du Nord" (GAN, Northern Army Group) along the Chemin des Dames, in the Second Battle of the Aisne.
 General Anthoine, commander of the Fourth Army planned a supporting attack but this was rejected by Nivelle and Anthoine planned a frontal attack by two corps on an 11 km front, to break through the German defences on the first day and commence exploitation the following day.
 The battle took place east of Reims, between Prunay and Aubérive, in the province of Champagne, along the Moronvilliers Hills.
The New Fourth Army Memorial Hall, full name "New Fourth Army National Revolutionary Army military memorial reconstruction", (Chinese:新四军纪念馆) is located in the east of Jianjun Road, Yancheng, Jiangsu, China.
 It was advanced as a State AAAA-class tourist attractions on 18 May 2011.
 It is known as the only one professional New Fourth Army Memorial Hall in China.
 It was built in 1985 and was finished in September 1986.
 Its exhibition hall is a modern architecture.
 There is armband pattern 'N4A',which colors blue and white, above the main entrance of the hall.
 And in both sides of its flag-shaped carving, it is the reflection of the historical scene where New Fourth Army joined force with the Eighth Route Army and where New fourth Army was reconstructed after the incident in Anhui.
 New fourth Army Memorial Hall is the base for primary and national patroitic education.
 There are about 1000 pictures of anti-Japanese war, a lot of historical relics and some artistic works.
 There is a bike with the legendary trophy named 'Manzhou'(Chinese:满洲）.
 All its exhibition reflect the history of how New fourth Army together with common people fighting against the enemies in the war .
The Attack on the Gommecourt Salient was a British operation against the northern flank of the German 2nd Army that took place on 1 July 1916, on the Western Front in France, during the First World War.
 The attack was conducted by the British Third Army (Lieutenant-General Edmund Allenby) as a diversion, to protect the northern flank of the main attack by the British Fourth Army on the First day on the Somme, from Serre southwards to the boundary with the French Sixth Army at Maricourt.
 To extend the attack front of the Fourth Army, the VII Corps (Lieutenant-General Thomas Snow) of the Third Army was to capture the Gommecourt Salient, the most westerly point of the Western Front.
 In the first week of May, the 56th (1/1st London) Division (Major-General Charles Hull) and the 46th (North Midland) Division (Major-General Edward Montagu-Stuart-Wortley) moved into the area for the attack.
 By 10 May, both divisions had taken over the front on the right flank of the 37th Division (Major-General A. Edward W. Count Gleichen) and begun training for the operation, making no attempt to conceal the preparations.
The New Fourth Army () was a unit of the National Revolutionary Army of the Republic of China established in 1937.
 In contrast to most of the National Revolutionary Army, it was controlled by the Communist Party of China and not by the ruling Kuomintang.
 The New Fourth Army and the Eighth Route Army were the two main communist forces from 1938.
 The New Fourth Army was active south of the Yangtze River (Chang Jiang), while the Eighth Route Army was based in Yan'an in the northwest.
The Third Transjordan attack by Chaytor's Force, part of the British Empire's Egyptian Expeditionary Force (EEF), took place between 21 and 25 September 1918, against the Ottoman Empire's Fourth Army and other Yildirim Army Group units.
 These operations took place during the Battle of Nablus, part of the Battle of Megiddo which began on 19 September in the final months of the Sinai and Palestine Campaign of World War I.
 Fought on the right flank and subsidiary to the Battle of Nablus, the Third Transjordan attack began northwards, with the assault on Kh Fasail.
 The following day a section of Chaytor's Force, attacked and captured the Ottoman Empire's 53rd Division (Seventh Army) on the main eastwards line of retreat out of the Judean Hills across the Jordan River.
 Retreating columns of the Yildirim Army Group were attacked during the battle for the Jisr ed Damieh bridge, and several fords to the south were also captured, closing this line of retreat.
 Leaving detachments to hold the captured bridge and fords, Chaytor's Force began their eastwards advance by attacking and capturing the Fourth Army garrison at Shunet Nimrin on their way to capture Es Salt for a third time.
 With the Fourth Army's VIII Corps in retreat, Chaytor's Force continued their advance to attack and capture Amman on 25 September during the Second Battle of Amman.
 Several days later, to the south of Amman, the Fourth Army's II Corps which had garrisoned the southern Hejaz Railway, surrendered to Chaytor's Force at Ziza, effectively ending military operations in the area.
The Japanese 4th Army (第4軍 , Dai-yon gun ) was an army of the Imperial Japanese Army based in Manchukuo from the Russo-Japanese War until the end of World War II.

Question: What areas were fought over in the war fought by the Japanese Fourth Army?
Answer: Manchuria and Korea