I am sure as the saying goes if push comes to shove... and Aussie comes under attack and is truely threatened... NZ would offer everything thing it has... while it is not much on the grand scale of things... I have pointed out many times else where...
It is still extra troops, 105 extra NZLAV (or 75 depending if they sell any lol) it is still extra LOVs and MHOVs for transporting... it is still extra javlin missiles and launchers, and still extra x24 105 howitzers, and I believe the Mistrals are still in storage...(Not 100% sure on that one) Its extra SAS units
It is still extra Herc's, extra NH-90's & A109 Helo's extra troop transport with the 757's as you have to move your defence force somehow... and more the merrier it is extra
upgraded P-3k2 (or P-8's depending on when this scenario happens) It is extra pilot training with the T-6.
It is still an extra 2 frigates, and tanker, as well as a MRV sealift vessel (again depending on when, as a 2nd LPD could be on the cards) and some semi-decent Sub-Hunting / Anti surface SeaSprites, and not forgetting the DHV for anti-mine and dive tender etc...
But more importantly... if Aussie is threatened, we offer more doctors, nurses, medical supplies, food and resources, and a place for refugees if needed...