Complex sentence: The Carden-Loyds were evaluated during the Fall maneuvers and revealed numerous problems: the crews had very poor vision through the narrow slits, the machine gun had a very narrow field of fire, and the crewmen had a difficult time communicating.
Split into simpler sentences: The Carden-Loyds were evaluated during the Fall maneuvers and revealed numerous problems. The crews had very poor vision through the narrow slits, the machine gun had very narrow fields of fire and the crewmen had a difficult time communicating.