Camouflage Joke | Camelflag

And now for a rather lame camouflage joke from World War I, as published in Cartoons Magazine, vol 13 (1918), p. 716—

Son Will Have to Get a Hump on Now

Mother (reading aloud from letter from son Bill, in France): "'I have been transferred to the camouflage department."' Pa, what is camelflag?"

Father: "That is—why ,er, that is a kind of feller who flags the-er-camel trains."