U.S. Army recruitment poster from 1918, just after the Great War. One wonders how much the prospective recruit would have known about the far-flung U.S military activities indicated on the map. Uncle Sam, it seems, was banking on at least some interest in the greater world but even more on the attractiveness of the skills and more practical inducements he could offer. Source: Library of Congress, PPOC, http://www.loc.gov/pictures/item/2002719778/.