Britons. Join Your Country’s Army!
This is perhaps the most famous poster from the First World War, and shows Field Marshal Lord Kitchener, appealing for people to join the British Army. It was first produced in 1914, but has taken on a more iconic status since the war, when it was not widely circulated outside of the London area. However, its striking visual appeal was picked up by other artists, including in the USA, where the image of Kitchener was replaced by Uncle Sam.