The 1964 amalgamation saw the new Territorial Force battalion become the Second Battalion of the Royal New Zealand Infantry Regiment. This was until the later reorganisation of 1999, which saw the Territorial Force battalions split from the RNZIR to become multi-function battalion groups. The 2nd Battalion (Canterbury, and Nelson-Marlborough and West Coast) RNZIR became the 2nd Canterbury (Nelson, Marlborough, West Coast) Battalion Group, with the following sub-unit types: