Army Group F
Between 20 September and 20 of November 1943 the corps conducted operations against Yugoslav Partisans in order to establish a connection with Army Group F in the Balkans and to secure communications east and northwards from Trieste and Rijeka. In these operations, according to the Corps Headquarters' Medical Department, the corps suffered total losses of 936 men. According to Croat authors, in the first phase against partisans on Istrian peninsula (Unternehmen Istrien), some 2000 partisans and 2000 civilians were killed by German forces, and additional 1200 were arrested, with some 400 transported to concentration camps. In November, 1943, Leibstandarte returned to the Soviet Union, with the corps remaining in Slovenia, Istria and northern Italy.