The 8th Army Airforce
Of all the branches of the military, the Army Airforce had an especially dangerous job. Leaving aside even the common flight risks of mid-air collisions and frostbite from flying in non-pressurized aircraft five miles in the air, the 8th Army Airforce dealt with unique horrors.
Over Germany, B-17 bombers couldn't be accompanied by escort fighters due to a lack of fuel range, leaving them particularly vulnerable to Luftwaffe raids during their bombing runs near the targets. Even when they weren't being raided they were subject to constant anti-aircraft bombardment from 88mm howitzers that shredded the planes.