George is on roller skates and holding a rope attached to a cement trailer. A cement bag breaks and covers him, but when he lets go and runs into Everett Manley and his car, virtually the whole of the white cement has disappeared. However, when George returns to base, he's covered in even more cement on his helmet and tunic.
The bren gun carrier driven by George has bullet holes in the side rather in the front or rear as would be expected. but being armoured one wouldn't expect bullet holes in it.