Kilroy had no rhyme nor purpose. It was just a joke, in and of itself. It just grew, until every wall or blank piece of paper had a picture of kilroy on it. Those who couldn't draw wrote the message: "KILROY WAS HERE" I did it myself, more than one. Check out wartime copies of Esquire Magazine, or early issues of 'Mad"

There was nothing mysterious about it. No secret codes or conspiracies. Just fun. Like Mudcatters do sometimes.

(Not to say that some twisted mind didn't seek to turn it to his own purpose.)

Spud