14. Infiltrating Enemy Organizations
Partisans sometimes infiltrated police forces or government agencies, feeding information to resistance networks or sabotaging from within. The Belgian Secret Army, known as the Armée secrète or Geheim Leger, was the largest resistance group in Belgium during World War II, with over 54,000 members. They engaged in intelligence gathering, sabotage, and assisting Allied airmen (en.wikipedia.org).
