James Montgomery Flagg was an American artist and illustrator. Flagg worked in media ranging from fine art painting, political cartooning, magazine illustrations, and United States military posters. He is best remembered for his political posters. One of his most famous works is this iconic poster of Uncle Sam. Uncle Sam’s classic I Want You!” saying soon became synonymous with not only the US Army but also with the United States as a whole. Many other Poster captured Uncle Sam likeness but this is perhaps the most famous of all.”