The phrase may have originated through United States servicemen who would draw the doodle and the text "Kilroy was here" on the walls and other places where they were stationed, encamped, or visited. An ad in Life magazine noted that WWII-era servicemen were fond of claiming that "whatever beach-head they stormed, they always found notices chalked up ahead of them, that 'Kilroy was here'".[3] Brewer's Dictionary of Phrase and Fable notes that it was particularly associated with the Air Transport Command, at least when observed in the United Kingdom.[4] At some point, the graffiti (Chad) and slogan (Kilroy was here) must have merged.[5]