Another terrible aspect of the trenches were the weather conditions. Most trenches were muddy, cold, and overall depressing. Many soldiers simply died from exposure to the cold, as the temperature within a trench was often below zero in the winter. Soldiers would lose fingers and toes to frostbite, and trenches were often filled by the rain— sometimes, the trenches would fill with water up to the soldiers’ waists. This submersion caused a terrible fungal infection called “Trench Foot.” The feet that succumbed to this could turn gangrenous, and often needed to be amputated. As conditions improved, Trench Foot became less frequent; however, a trickle of cases continued. Good socks and boots were essential to some soldiers.