in the fall of 1941, during a major German operation in western Serbia against the partisans. The Chetniks wanted to minimize Serbian casualties from German reprisals by defeating the partisans, and later wanted to gain a solid base in the Nedić regime's military and administrative apparatus, so that they could seize control of the government before the partisans at the end of the war. Many members of the Serbian government maintained contact with the Chetniks, including interior minister Milan Aćimović. He later served as the liaison between the Germans and the Chetnik leader Draža Mihailović. Several Chetnik units "legalized" themselves by serving with the quisling forces of the Serbian puppet government, but at the same time, Chetniks also took part in activities against the Germans and their auxiliaries. The government's armed forces gave weapons and other supplies to the Chetniks and provided them with intelligence. Legalized Chetnik forces included the Pećanac Chetniks, who fought against the partisans with the Serbian government forces beginning in August 1941. The Germans did not trust them. At the peak of their strength in May 1942, the legalized Chetniks numbered at 13,400 officers, non-commissioned officers, and men. Chetnik detachments were, as with the other Serbian forces, under German command. Most legalized Chetnik detachments were dissolved in late 1942, with the last being dissolved in March 1943. Some of them joined the SDS or SDK, but the majority returned to Mihailović's illegal Chetniks. The Chetniks made a number of agreements with the Germans in 1943, bypassing the Serbian puppet government, which resulted in Nedić and his regime losing what support it had left among the people. Many members of his administration, including government officials, as well as military and police officers, made secret deals with the Chetniks themselves. Those included Aćimović, Belgrade's mayor, Dragomir Jovanović, and General Miodrag Damjanović of the State Guard. Accepting refugees One area in which the Government of National Salvation did have success was the acceptance of Serb refugees that fled from neighboring states, most notably the Independent State of Croatia (NDH). The Germans transferred some Slovenes to the Serbian rump state as that territory was incorporated into Nazi Germany. Other sources of refugees included Bulgarian-occupied Macedonia and the Italian governorate of Montenegro. Franz Neuhausen, the German plenipotentiary for economic affairs, estimated that there were about 420,000 refugees in Serbia. The Nedić regime created a Committee for Refugees in May 1941 to