The GOTHA G-IV Night Bomber of WWI. The earlier Gotha G-III was designed so that the rear gunner had to switch between firing the dorsal gun and the ventral guns, which was not very efficient, especially in the heat of combat! The Gotha G-IV was an improvement over the G-III by the adding of the "Gotha Tunnel" that allowed the rear gunner to quickly aim his dorsal gun down into the tunnel firing at his targets below the airplane, eliminating the need for the ventral gun. Although, there was...
