I found this information: "1918-09 le Verguier, France Dummy tanks used successfully by the 4th Australian Division in the attack on le Verguier in 1918-09. These tanks (10 in number) were made by the 4th Field Company Australian Engineers entirely of wood & canvas. They were camouflage painted & even had names and regimental colours added. Two eight foot diameter wheels with wide flanges supported the tanks 6 inches clear of the ground and crews of six men had no difficulty in pushing the tanks over boggy ground and trenches. Only one tank was disabled & two of the crews slightly disabled by machine gun fire."
Is it possible that Australians made these dummies to scare enemies? If you have some other infomation please post it here.. I found also one picture