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
