The German Seventeenth Army () was a field army of Nazi Germany during World War II. Operation Barbarossa On 22 June 1941, the 17th Army was part of Army Group South when Nazi Germany launched Operation Barbarossa and invaded the Soviet Union. From 1 July, the Hungarian "Mobile Corps" (Gyorshadtest) was subordinated to the 17th Army. Along with 1st Panzer Army, the 17th Army encircled Soviet forces in central Ukraine during the Battle of Uman. Approximately 100,000 Soviet troops were captured. The 17th Army participated in the Battle of Kiev. Army Group South was ordered to resume the offensive, with the objective of capturing Rostov-on-Don, the gateway to the Caucasus oil fields, and Kharkov, a major center of heavy industry for the Soviet Union. In October 1941, the army came under the command of Hermann Hoth, who was convicted post-war in the High Command Trial. Hoth was an active supporter of the war of annihilation () against the Soviet Union. He called upon his men to understand the need for "harsh punishment of Jewry". In support of the Severity Order issued by Walter von Reichenau in October 1941, in November 1941 Hoth issued the following directive to troops under his command: Under Hoth's command, units of the 17th Army took part in the hunt for and murder of Jews in its territory of control. Battle of Stalingrad In 1942, Army Group South was to spearhead the German summer offensive in Russia known as Case Blue. The 17th Army was to give flank protection to 1st Panzer Army as it struck towards the Don River. From June to July, the German 17th Army, the Italian Expeditionary Corps in Russia, and the Romanian 3rd Army were organized as "Army Group Ruoff". In August 1942, Hitler sub-divided Army Group South into two new army groups: Army Group A and Army Group B. Army Group A included the 17th Army, the 1st Panzer Army, and the 4th Panzer Army. Army Group B included the 2nd Army, the 6th Army, the Italian 8th Army, and the Hungarian 2nd Army. By October 1942, the Romanian 3rd Army and the Romanian 4th Army were added to further bolster Army Group B. While Army Group B struck towards Stalingrad, Army Group A and the 17th Army attacked towards the Caucasus oilfields in what was to be known as the Battle of the Caucasus. However, by December with Soviet