Brown Bess musket by Brown Bess licensed under CC BY-SA 2.0
The rifle can increase damage from shooting the enemy with bullets. The bullets can penetrate through the enemy and kill them. Also the rifle can be used to threaten the enemies but they have them too. The rifle can make quick kills and accurate shots.
Arian helmet by Rama licensed under Creative Commons Attribution-Share Alike 2.0 France
The steel helmet can defend against bullets. Also it can reduce the risk of an injury if u land on your head while falling or an object falling on it. The steel helmet can also protect from exposure to sun if you have a hat shaped helmet.
US WWI Gas mask with bag by historical licensed under Creative Commons Attribution-Share Alike 3.0 Unported
The gas mask can protect against the poisonous gasses that are throw to the enemy and can lower the risk of you being effected. this would protect your lungs and not make you be effected. The gas mask is only used when there are poisonous gases around that can be harmful to the lungs and respiratory system ("10 things").
Crudely shaped trench club from World War One by York Museums Trust licensed under Creative Commons Attribution-Share Alike 4.0 International
The trench club can help dig trenches and can fit into small places. The trench club can make work quicker and not as intense on the body then digging it or being in your knees digging the bottom. The trench club could also help eliminate trench rats by hitting them or if an enemy was in close range you could use this as a weapon.
Pocket surgical instrument set by Wellcome Images Licensed by Creative Commons Attribution 4.0 International
The surgical kit can be used to do quick surgery. The quick surgery can save a person for having to wait to until a surgeon can take over. The kit can be used to clean infected areas and stop bleeding so you don't bleed out and die ("10 things").
Background picture citation: Cheshire Regiment trench Somme by John Warwick Brooke licensed by Public Domain
10 Things That Could Have Saved Your Life in the Trenches. IWM, 2016, www.iwm.org.uk/history/10-things-that-could-have-saved-your-life-in-the-trenches. Accessed 27 Mar.2017.