Entitled: "Back our girls over there United War Work Campaign." Y.W.C.A. poster for the United War Work Campaign showing a young woman seated at a switchboard with soldiers in the background. During World War I, the YMCA raised and spent over $155,000,000 on welfare efforts for American soldiers. They deployed over 25,000 staff in military units and bases from Siberia to Egypt to France. They took over the military's morale and comfort operations worldwide. Artist Clarence F. Underwood.