The Salvation Army devoted itself to making the lives of service men better and keeping up morale. Thousands of women volunteered to serve at the front in non-combat roles, running rest areas for the soldiers and cooking warm meals.
Here a group of women Salvation Army volunteers are cooking pies for the soldiers. Note that they are wearing metal helmets and standing near a trench line.
Although the women were unarmed and not technically part of the fighting, their proximity to the front lines meant that they shared many of the same dangers as the men.