During WWII starting in 1944 american bombers flew over Germ

During WWII, starting in 1944, american bombers flew over Germany and bombed the industrial sites. Planes would come back, and some of them had been shot at. Some had holes in the wings but most had holes in the fuselage. The head of the Air Force ordered that the armor of the planes be reinforced. What part of the planes should be reinforced?

Solution

The fuselage armor should be reinforced because most planes had holes in the fuselage.