 Complete the following phrase:  The Royal Australian Regiment RAR is the parent administrative regiment for regular infantry battalions of the Australian Army and is the senior infantry regiment of the Royal Australian Infantry Corps. It was originally formed in 1948 as a three battalion regiment; however, since then its size has fluctuated as battalions have been raised, amalgamated or disbanded in accordance with the Australian governments strategic requirements. Currently, the regiment consists of seven battalions and has fulfilled various roles including those of light, parachute, motorised and mechanised infantry. Throughout its existence, units of the Royal Australian Regiment have deployed on operations in Japan, Korea, Malaya, 