Trench foot
trench foot happens when the feet/foot stay wet for long periods of times if you don't treat your trench-foot it will spread to the rest of your foot.Beacause the soldiers stayed in the trenches for long periods of time it was very common for them to get trench foot it was very wet and cold.there was no remedy or medicine for trench foot you just had to dry your feet and change your socks a couple times a day to make it stop being wet and cold. if that didnt work they would have to amputate your foot/feet.