Civilians in occupied countries who joined resistance movements were often called blank

During world war 2, the civilians were called partisans

Partisans were something like rebels or freedom fighters in areas conquered by Germany. The term stuck and was used a lot to describe especially those fighters from the Balkans area where partisans who were communists fought against Italians and Germans and later became even more important when the war ended.

The statistics for the eastern war are grim. more than three-million men died in the fighting, more than nine-million men were wounded, and every major country which participated lost its form of government.