The message appeared mysteriously all over Europe and the Pacific during World War II. It was scrawled on desolate beachheads, notable landmarks and the walls of buildings. Often discovered by the first American Troops entering an area that had been occupied by enemy troops. Supposedly made by an American, it delighted American troops; it added a touch of levity to a brutal war, yet intrigued. Who was Kilroy and how did he get there before everyone else?