 Trench foot can be prevented by keeping the feet clean, warm, and dry.It was also discovered in World War I that a key preventive measure was regular foot inspections; soldiers would be paired and each partner made responsible for the feet of the other, and they would generally apply whale oil to prevent trench foot.If left to their own devices, soldiers might neglect to take off their own boots and socks to dry their feet each day, but when it was made the responsibility of another, this became less likely.