Use wet cloths. If there was no water available, soldiers would use wet cloths to wipe themselves down. They would often wet the cloths in water from their canteens, or from rain barrels.
Build field showers. In some cases, soldiers would build field showers. These were usually made from a simple frame covered with canvas, and a hose or bucket of water.
Use dry cleaning kits. Soldiers would often carry dry cleaning kits with them. These kits contained a brush, a piece of cloth, and a can of cleaning powder. The powder was used to absorb dirt and grease from the skin.
Shave. Soldiers were expected to shave regularly, as facial hair was seen as unsanitary. They would often use a straight razor and shaving soap to shave.
Brush their teeth. Soldiers were also expected to brush their teeth regularly. They would often use a toothbrush and salt to brush their teeth.
Use deodorant. Soldiers would sometimes use deodorant to help them stay fresh. Deodorants were often made from a mixture of herbs and spices.
Wear clean clothes. Soldiers were issued with a new set of clothes every few weeks. They were expected to keep their clothes clean, as dirty clothes could spread disease.
Change their socks. Soldiers were also expected to change their socks every day. Socks were often worn out quickly, so it was important to change them regularly.
Wash their hands. Soldiers were taught the importance of washing their hands, as this helped to prevent the spread of disease. They would often wash their hands in water from their canteens, or from rain barrels.