He served in both battalions of the Royal New Zealand Infantry Regiment and in the New Zealand Special Air Service.
He had two operational postings to peace support missions, one with the UN in Southern Lebanon and then commanding a peace monitoring group on Bougainville in 1998.
A later he was promoted to brigadier as Land Component Commander, Joint Forces New Zealand and from December 1999 to mid-2001 commanded NZ forces attached to the UN administration in East Timor.
Sir Jerry was promoted to major general and became the Chief of General Staffbefore being promoted to lieutenant general in 2006 and appointed as the Chief of Defence Force which he held until early 2011.
He was then named director of the Government Communications Security Bureau for a five year term but stepped down from the role to be sworn in as Governor-General in August 2011.
He was NZ's 20th Governor-General and the second Māori person to hold the office after Sir Paul Reeves.
A year ago it was announced that Sir Jerry would be New Zealand's next high commissioner to the United Kingdom, a posting he assumed early in 2017.