"You can become a skilled tradesman by joining the Army." UK World War II propaganda poster. (Even soon-to-be obsolete trades.) 

"Clear the Way!!" US World War II War Bond poster. 

"Be Ready! Join Now." UK World War I propaganda poster. 

"National Service Enrol To-Day." UK World War I propaganda poster. 

"Come into the ranks..." UK World War I propaganda poster. 

"The Army isn't all work." UK World War I propaganda poster.

"The Empire needs Men!" UK World War I propaganda poster.

"At the Front!" UK World War I propaganda poster.

"Your Country's Call." UK World War I propaganda poster. 

"Daddy, what did you do during the Great War?" UK World War I propaganda poster. 

"Who's Absent?" UK World War I propaganda poster. 

"It is far better to face the bullets than to be likked by a bomb at home." UK World War I propaganda poster. 

"Red Cross or Iron Cross." UK World War I propaganda poster. 

"The Hun and The Home." UK World War I propaganda poster. 

"How the Hun Hates!" UK World War I propaganda poster. 

"Once a Germen, Always a German." UK World War I propaganda poster.