Stjepan Freiherr Sarkotić von Lovćen (also "Stefan Sarkotić", "Stjepan Sarkotić", or "Stephan Sarkotić"; 4 October 1858 – 16 October 1939) was a Croat Austro-Hungarian Army lieutenant field marshal who served as Governor of Bosnia and Herzegovina and military commander of Dalmatia and Montenegro during the World War I.
Dual monarchy occurs when two separate kingdoms are ruled by the same monarch, follow the same foreign policy, exist in a customs union with each other and have a combined military but are otherwise self-governing.
 The term is typically used to refer to Austria-Hungary, a dual monarchy that existed from 1867 to 1918.
Franz Freiherr Rohr von Denta (30 October 1854 – 9 December 1927) was an Austro-Hungarian Field Marshal and field commander who served as the last commander of the Austro-Hungarian First Army.
Lieutenant field marshal, also frequently historically field marshal lieutenant (German: "Feldmarschall-Leutnant" , formerly "Feldmarschallleutnant", historically also "Feldmarschall-Lieutenant" and, in official Imperial and Royal Austrian army documents from 1867 always "Feldmarschalleutnant", abbreviated "FML"), was a senior army rank in certain European armies of the 17th to 20th centuries.
 It emerged as the rank of field marshal (German: "Feldmarschall" ) came to be used for the highest army commander in the 17th century (having originally been the equivalent of a cavalry colonel).
 In German-speaking countries the commander-in-chief usually appointed an "under marshal" ("Untermarschall") or "lieutenant field marshal" to support and represent the field marshal.
 Amongst his functions as the personal deputy to the field marshal, were the supervision of supply depots and routes, and inspection of the guards.
The Green cadres (Croatian: "Zeleni kadar" ) was the name given to Croatian deserters from the Austro-Hungarian Army during World War I.
 After leaving the army, due to the harsh conditions of warfare and poor motivation, they hid in the woods, as outlaws.
 They numbered several tens-of-thousands and were operative in areas of Croatian territory and Syrmia.
 The groups subsisted in part on food and clothing supplied by sympathetic rural people, but also lived on income generated by robbing traders and rich farmers.
 General Stjepan Sarkotić got in February 1918 the order to get involved with the ""Green cadres"".
 The term "Green cadres" was previously unknown in the Austro-Hungarian army !
 (As "Green cadres" was known the bodyguards of the Emperor of Russia.)
 The Croatian Committee was formed opposed to the Yugoslav Committee.
 Toward the end of the war was their number over 50,000 armed deserters in the woods.
The Austro-Hungarian Army (German: "Landstreitkräfte Österreich-Ungarns" ; Hungarian: "Császári és Királyi Hadsereg" ) was the ground force of the Austro-Hungarian Dual Monarchy from 1867 to 1918.
 It was composed of three parts: the joint army ("Gemeinsame Armee ", "Common Army", recruited from all parts of the country), the Imperial Austrian Landwehr (recruited from Cisleithania), and the Royal Hungarian Honved (recruited from Transleithania).
August Giacomo Jochmus (after 1859:) Freiherr von Cotignola (born February 27, 1808 in Hamburg, Germany, died 14 September 1881 in Bamberg, Germany) was an Austrian lieutenant field marshal, and minister of the German Confederation.
 He spent his life in Greek, English, Spanish and Turkish service, was briefly foreign minister and Navy minister of the Frankfurt Parliament of the German Confederation in 1849 and finished his career as an Austrian Lieutenant Field Marshal.
Ludovico Luigi Carlo Maria di Barbiano di Belgiojoso or Ludwig Karl Maria von Barbiano Graf von Belgiojoso (2 January 1728 – 15 May 1801, Milan) was an Austrian diplomat and Lieutenant Field Marshal who served the Habsburg Monarchy in the second half of the 18th century.
Artur Edler von Mecenseffy (23 June 1865, Vienna — 6 October 1917, Asiago) was an Austro-Hungarian Army officer who held the rank of "Feldmarschall-leutnant" ("lieutenant field marshal") and served during World War I, becoming the highest ranking officer of Austria-Hungary to be killed on the battlefield.
Austria-Hungary, often referred to as the Austro-Hungarian Empire or the Dual Monarchy in English-language sources, was a constitutional union of the Austrian Empire (the Kingdoms and Lands Represented in the Imperial Council, or "Cisleithania") and the Kingdom of Hungary (Lands of the Crown of Saint Stephen or "Transleithania") that existed from 1867 to 1918, when it collapsed as a result of defeat in World War I.
 The union was a result of the Austro-Hungarian Compromise of 1867 and came into existence on 30 March 1867.
 Austria-Hungary consisted of two monarchies (Austria and Hungary), and one autonomous region: the Kingdom of Croatia-Slavonia under the Hungarian crown, which negotiated the Croatian–Hungarian Settlement ("Nagodba") in 1868.
 It was ruled by the House of Habsburg, and constituted the last phase in the constitutional evolution of the Habsburg Monarchy.
 Following the 1867 reforms, the Austrian and the Hungarian states were co-equal.
 Foreign affairs and the military came under joint oversight, but all other governmental faculties were divided between respective states.

Question: What was the ground force of the Austro-Hungarian Dual Monarchy where Stjepan Freiherr Sarkotić von Lovćen was a lieutenant field marshal?
Answer: Austro-Hungarian Army