The New Zealand Gallantry Medal (NZGM) is the fourth level military decoration of the New Zealand armed forces. It was instituted by Royal Warrant on 20 September 1999 as part of the new indigenous New Zealand Gallantry system. The medal, which may be awarded posthumously, is granted in recognition of 'acts of gallantry' while involved in war and warlike operational service (including peacekeeping). Bars are awarded to the NZGS in recognition of the performance of further acts of gallantry meriting the award. Recipients are entitled to the postnominal letters NZGM.