Explanation:

The weather also contributed to rough conditions in the trenches. Rain caused the trenches to flood and get muddy. Mud could clog up weapons and make it hard to move in battle. Also, the constant moisture could cause an infection called Trench Foot that, if untreated, could become so bad that a soldier's feet would have to be amputated. Cold weather was dangerous, too. Soldiers often lost fingers or toes to frostbite and some died from exposure in the cold.