We're both needed to serve the Guns World War 1 WWIOriginal antique World War One recruitment poster depicting two men shaking hands, one a soldier in uniform holding a rifle gun over his shoulder, standing in front of soldiers manning a cannon with explosions in the background, and the other a worker in front of an industrial munitions factory in the background, the message above and below: We're both needed to serve the Guns! Fill Up the Ranks! Pile Up the Munitions!' Horizontal. Poster No. 85c,