I've added Australian and New Zealand soldiers to the available nationalities. They should show up fairly regularly, Aussie and Kiwi soldiers were pretty experienced troops in the 70's with all the little wars in SE Asia so it figures that some would become Xenonauts.
Unzip into the assets folder. Back up soldiernames.xml and strings.xml first though.
UPDATE: I've changed the combat experience for the anzacs to Malaya, Borneo and Vietnam. I've also split the Germans into East and West to give it a real Cold War flavour.
The West German regiments are GSG 9 (A counter-terrorist unit. Also gives a chance for combat experience in Mogadishu, where they stormed a hijacked plane in 1977), FSLK200 (A long range recon unit), and the 26th Fallschirmjager Brigade.
The East German units are unchanged but they have a chance for some combat experience in Angola and Congo, where they were pretty active in the '60s and '70s as advisors.
(Banner courtesy of Wolfy)