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This must of been in conjunction with the handing out of white feathers by young woman to men not in uniform.
British WW1 | propaganda poster
London Recruiting poster, 1914-18
WWI poster urging British young women to convince their 'best boys' to enlist. (Retronaut)
WW1 Classic Wartime Poster Art
Everyone Should Do His Bit. #WWI #vintage
A British World War I war effort poster that reads “Salvage! Every Little Helps”.
conscientious objectors wwi new zealand - Google Search
The Hun and the Home
21 World War I Recruitment Posters From Around the Globe - Mental Floss
lostsplendor: Come Along, Boys. Recruitment Posters, c. WW1.
WWI Poster - recruiting women for the Motor Corps of America
"He Volunteered for Submarine Service" WW II U.S. Navy Recruiting Poster (1944)
WAVES RECRUITING POSTER, WWII, WOMEN WHO SERVED
"Greetings from France" postcard showing a World War I soldier dreaming of his girl back home.
American WWI poster, "America's All! Victory Liberty Loan"