Easy answer, Yes. Australia and Britain were/are allies as Britain was once seen as a "Mother Country" and promised to always help Australia if they were ever introuble, as did Australia for Britain.
No . . . Australia is a loyal ally to Great Britain.
Australia has not lost Britain as an ally.
Australia fought with Great Britain and her ally the USA. They fought against the Japanese Empire and Nazi Germany but the majority of Australia's fighting was based in the Pacific.
Australia fought in WW2 as an ally of Great Britain in both the European and pacific parts of WW2. Australia made its forces and its infrastructure available in the war against the Germans and the Japanese.
Because Australia is an ally of Great Britain. Since Great Britain wanted to go into War, Britain needed more power, and with more power, they needed more people. So Great Britain increased its power by getting all Commonwealth Countries to fight on the Allies side.
New Zealand was an ally to "the allies" i.e Great Britain, USA, Australia, most of the Nordic countries and numerous others from Europe and the pacific.
Yes Great Britain was an ally to France and Belgium.
WW2
The United States' strongest ally is Israel.
We were an ally of Great Britain.
1778
Not at all. Great Britain is in the northern hemisphere. Australia is in the southern hemisphere.