 While the Partisans opted for overt acts of sabotage that led to reprisals against civilians by Axis forces, the Chetniks opted for a more subtle form of resistance.Instead of detonating TNT to destroy railway tracks and disrupt Axis railway lines, Chetniks contaminated railway fuel sources and tampered with mechanical components, ensuring trains would either derail or breakdown at random times.Martin suggests that these acts of sabotage significantly crippled supplies lines for the Afrika Korps fighting in North Africa.