Washington Post, 2-7-2017
Iraqi forces taking over an ISIS base in Mosul in January reported finding papers from at least 14 Islamic State "fighters" who had tried to claim "health" problems, asking commanders to excuse them from real combat (and martyrdom).
One (a Belgian man) actually brought a note from a doctor back home attesting to his "back pain." Five of the 14 were initiated by volunteers from France, a country that endures a perhaps-deserved national reputation for battle-avoidance.