The French used red pants and blue jackets, they were very visible. They stopped to use this in 1915.
The Germans used green pants and green jackets. Their hats had a pointer at the top, and this made them look more scary. They were not so visible.
Britain also used green pants and green jackets, so they were not so visible. They started to use this in 1902.
At the start of the war everyone had to change their uniforms. Before everyone used hats but during the war everyone changed to using helmets.
