Do a search on
the AWM site for "carriers" or "Tobruk". That will bring up plenty of pics, like the one below:
"El Alamein. 1941. VX47906 Corporal Frank Joseph Littlejohn (left) and another member of 2/32nd Battalion with a painted bren gun carrier. On the side is a painting of a rat holding a cigarette and the words "rats to you", symbolising the rats of Tobruk, painted by TX12 Private R. E. (Rufus) Webster."