Oh yes and we used to have to stand up in the picture theatres and sing it before the movies stared back in the 1960s. It wasn't until later that the dirge that is God defend NZ became the official anthem. Churchill was very unimpressed Curtin and I believe had some impolite to say about him. Peter Fraser, the NZ PM, also was all for bringing the NZ division back too, but Churchill forestalled that by getting Roosevelt to agree to stationing US Marines here. So the US Marines that went Guadalcanal left from Wellington after a long period of training here. Leon Uris's novel "Battle Cry" is set in the lower North Island of NZ and in the Solomons. Good read too.
The problem was however, the the Marines were raw recruits with zero experience as some of the earlier debacles in both Guadalcanal and New Guinea illustrated and the NZ Division was battle hardened and had earned a fierce reputation as a fighting force.
The Marines training was cut short and their Commander, Major General Andrew Archer Vandergrift, fought hard to delay the operation.
Vandergrift had expected he would have 6 months to train his troops in NZ and New Caledonia before the Watchtower Operation but CNO Admiral Bill Leahy’s Chief of Plans, Admiral Robert Ghormley gave him only 5 weeks! So no, not a “long period”
Churchill’s obsession with defeating Hitler first paid no respect for the defence of our two countries, a fact that made Curtain turn to the US, despite him being a keen Empire man, and caused him to despise Churchill and gave birth to a turning point in Australia’s foreign engagement. It also precipitated one of Curtains more well known quotes “I make it quite clear that Australia looks to America”.
PS I grew up knowing the two prominent verses of God Save the Queen but it wasn’t until the mid 70s when I went to watch the Wallabies regularly that I learned the words to “Advance Oz fair”