Sometimes, you've just got to marvel at the fact that 18 grown men were needed to fully operate the Sturmpanzerwagen A7V, and that 18 grown men could even fit inside such a small space in the first place. In fact 18 was actually the MINIMUM amount of people needed to operate Germany's first ever tank. Astoundingly as many as 24 people could fit inside the Sturmpanzerwagen. Comparably, the British "Mark" tanks required a crew of just eight. The photo here is dated 1918. Swipe left for a cutaway of the A7V showing just some of its crew and their respective positions.