How many allied casualties were actually sustained in the trenches?

Answer 1

Allied casualties in the trenches during World War I were substantial, with estimates suggesting around 5 million soldiers were either killed, wounded, or went missing. The conditions in the trenches led to not only combat-related injuries but also significant losses from disease and exposure. The Western Front, in particular, saw some of the heaviest fighting, resulting in severe attrition rates for the Allied forces. Overall, trench warfare contributed to one of the deadliest conflicts in history.