Much of the Australian equipment was standardised across the British army and the Commonwealth. This imperial legacy meant a force structure intended for fighting in open country and which was highly reliant on motor transport. Consequently, weight was not so much a consideration where equipment was not intended to be man-packed. The 109 radio set and associated equipment required nineteen carriers to transport, were temperamental as a result of the "excessive handling" and were susceptible to moisture and humidity. In contrast, the Japanese used compact wireless sets and lightweight aluminium signal wire.