The Werwolfs were the name for the Nazi Resistance movement in Germany which continued the war against the Allied Forces following the end of World War II. The GLF waged an aggressive terrorist resistance against the Allies for many years after the alleged end of World War II.
After Operation Gotterdammerung failed, the German government began preparing for the inevitable US victory and trained the Hitler youth into becoming insurgents.
After the H-bombs were used on Germany, Rommel and Manstein tried to disband the cells, but by then, most of the GLF had gone underground.
Organization and Tactics
The GLF worked in a Cell format like Al-Qaeda or the IRA OTL, and they used weapons like the former (suicide bombers, aircraft etc.) and they utilized these methods ruthlessly, when they crashed a plane into Washington DC.