Serbia's government has formed a special commission to try to locate the grave of a World War II guerrilla leader executed as a traitor by the Communists. The location of Dragoljub Draza Mihailovic's grave has been unknown since postwar Communist authorities executed him 1946 for collaboration with the Nazi occupiers. A Chicago-based Serb group recently offered a $100,000 reward for help finding the grave. Mihailovic, a Yugoslav soldier, launched a resistance movement in 1941 against the German occupiers. But he also fought against Communist guerrillas later in the war. In 1948, US President Harry Truman posthumously awarded Mihailovic the Legion of Merit award for his role in rescuing hundreds of US airmen downed by the Nazis over Serbia.