 The M44 was extremely large (51,000 lb combat weight); carrying 24 infantry as well as a driver, bow gunner and vehicle commander.It was evaluated at Fort Knox and Aberdeen Proving Ground after the end of the war, but, ultimately, the army rejected the M44 as being too large - at the time, their tactical doctrine required infantry squads of ten men.As a result, only a handful of M44s were built, seeing service in a number of auxiliary roles.