They heeded the call of the United Nations in 2001.
Edmund Barton, Australia's first Prime Minister, did not directly send troops to war during his time in office. However, under his leadership, Australia did contribute forces to the Second Boer War in South Africa, which commenced in 1899, prior to his premiership. Barton supported the government's decision to send troops, marking Australia's first overseas military engagement as a federated nation.
Australia's involvement in the Vietnam War was to stop the spread of communism. What began as a limited engagement of a few troops ended with more than 60,000 troops in Vietnam and the title as Australia's most costly war.
The most common reason Australia has entered in previous troops was to aid Allies such as England and the US. This is the reason they entered most major wars, such as the Korean War,ÊVietnam War, and the Iraq War
No.
Any country with an army or militia will send there troops into a conflict or war.
UK, Turkey, Australia, South Korea had the most troops
Woodrow Wilson's most famous campaign slogan was "he kept us out of war," because when World War I broke out in Europe, Wilson kept America neutral and did not send troops overseas. However, he did eventually send troops in his second term.
The president could send troops overseas without a congressional declaration of war.
for for years
The Prime Minister has the executice power to send troops to war but would usually discuss this with the senior cabinet ministers and perhaps the Govenor General before commiting forces.
That was the basis for Australia joining the ANZUS Pact, and the Pact was the basis for its entry into the Vietnam War.