This document is a propaganda poster from (date de l'affiche) entitled "An enquiry from the front" with a subheading "When are the other boys coming?".
In the foreground we can see a question mark which is drawn on the soldier in the background. As it is clearly written and illustrated, the (écrit qui recrute des hommes) needs more men volonteers, to join the force in the battleground which is why they are asking "when are the other boys coming?". The big question mark means they need a lot.
