We were recently in Ottawa to speak at the Canadian War Museum, in connection with the current exhibition called Camouflage: From Battlefield to Catwalk. It continues through September 6, 2010, and is undoubtedly well worth the visit. Among the things exhibited is the August 3, 1918 issue of a magazine called The Sphere, which includes a full-color reproduction (pp. 86-87) of a World War I painting (by an artist named S. Ugo) of British soldiers applying disruptive camouflage to the surface of a cannon.
On the same day, we toured the other, permanent exhibits in the War Museum, including a basement section in which scores of tanks, trucks, cannon and so on are housed. Among the various artifacts there was a WWI camouflaged wagon (shown below), which, we were told, was the bottom half of a mobile observation post.