Britain, Indonesia, America, New Zealand, India and cuba
There has only been one war in Australia and that was against Japan.
Australia has not had a war. The country has been involved with other wars around the world, but Australia has not had a civil war.
No war has occured on Australian soil. But Australia has been "at war" eg WWI, WWII etc.
At no time has either Australia or New Zealand been at war with Sudan.
There has never been a civil war in Australia. There has been conflicts with the Indigenous community, but never a war. However, Australia has participated in wars such as World War 1 & 2, Vietnam, etc.
Yes!
Australia has never been a communist country.
It remains at war in the Middle East.
Siberia is a region of Russia, not a country. Australia has never declared war on, or been at war with either the USSR or Russia.
Australia has never attacked Australia. There has been no civil war within the country. Smaller rebellions have taken place, such as the Battle of the Eureka Stockade, but there have been no major battles.
Australia England and New Zealand
Australia has never been conquered by any foreign power. The US and Australia have been allies for ~200 years and American troops have been supported by Australian troops in every international conflict since WWI.