Join the air service and serve in France--Do it now.

Join the air service and serve in France--Do it now. LOC Summary: Two soldiers, one using binoculars, in foreground, and American airplane above. LOC Notes: From the Rehse Archiv für Zeitgeschichte und Publizistik. Date Created/Published: 1917. World War 1 propaganda poster provided by LOC. Original medium: 1 print (poster) : color.