Some Luxembourgers collaborated with Nazi Germany or were drafted into the German armed forces. A total of 12,000 Luxembourgers served in the German military, of whom nearly 3,000 died during the war. Others joined the Luxembourg Resistance. The general strike of 1942 was an act of passive resistance that mobilized a large portion of the population and led to the execution of 21 leaders. American forces liberated the capital in September 1944, but the country continued to see combat. Luxembourg Resistance fought German forces in the Battle of Vianden in November, and the Battle of the Bulge was fought in the country between December and January.