Crafty Tricks of War (2004) - 1x06 - Itchy Scratchy

Scientists working for Britain's Special Operations Executive equipped its secret agents with several fiendish weapons, including a firearm that could be hidden in a sleeve and a miniature gun disguised as a cigar. But the most unusual SOE "weapon" was surely itching powder. SOE agents contaminated uniforms with itching powder in an attempt to lower morale among selected groups of enemy personnel. U-boat crews were singled out for special attention. At least one operational U-boat had to return to base because the crew believed they were suffering from an acute skin condition that made it impossible for them to concentrate on their work. Itching powder was also placed into condoms destined for use by German servicemen stationed in Norway. Resistance sources reported that the results were extremely uncomfortable for the occupiers...