"Physically it was very difficult and emotionally equally as difficult having to cope with the rigors of war albeit at a back stage level." There are about 2500 foreign citizens from more than 60 countries enlisted in the IDF, of which it is believed 100 are Australian. The Department of Foreign Affairs and Trade does not keep figures on how many Australians are fighting in foreign armies, however the subject has received attention recently as the government looks to toughen laws preventing Australians fighting in Syria and Iraq from returning home. Proposed counter terrorism legislation would make it easier to identify, charge and prosecute people who have engaged in terrorist activities overseas and would also make it an offence to travel without a valid reason to an area designated by intelligence agencies. It is believed 60 Australians are currently fighting with Islamic State (IS), which is classified in Australia as a terrorist organisation. Last month, during talks with Islamic leaders in Sydney, in response to a perceived double-standard that continues to allow Australians to fight for armies of states such as the IDF, Prime Minister Tony Abbott made the distinction between Australians fighting for designated terrorist groups like IS and dual nationals serving in overseas armies of nation-state.

For Greene, who lives in Caulfield, army service was not a tacit agreement with Israeli geopolitics. "The army by its definition is an apolitical organisation. I felt my time in the army was not serving any sort of political agenda," he says. "I felt I was serving the IDF and in doing so I was protecting Israel's citizens and its borders." Greene says he chose army service over the university student rite of passage - a backpacking trip - as a vehicle for personal growth. I felt my time in the army was not serving any sort of political agenda. I felt I was serving the IDF and in doing so I was protecting Israel's citizens and its borders. Adam Greene The son and grandson of Polish immigrants who migrated to Australia just outbreak the outbreak of World War II, Greene says the spectre of the Holocaust weighed heavily on his decision to volunteer for the IDF.

His service was also a way of expressing his solidarity with the young Israeli men and women who face conscription. "I don't judge those who don't enlist, but I didn't think it was fair that just because [my family] had a bit more money to get to Australia and not to go to Israel that all my contemporaries who were in Israel had to enlist in the army," he says. "I wanted to acknowledge that in a meaningful and significant way." While Greene, whose father was a private in the Australian army in the 1950s, concedes he could have experienced the same personal growth in the Australian Army, he says it was the IDF that "needed" him more. "At the time and unfortunately always Israel finds itself at a clear and present danger, facing existential threats. Fortunately Australia doesn't". The war with Lebanon ended after five weeks, but danger loomed large for the duration of Greene's service. He faced a potential terrorist threat when a car crashed into the fence of a religious school he was guarding in Jerusalem's West Bank, and he spent five months on a military base on the border of Lebanon and Syria protecting Israel's northern borders.

"It takes one RPG [rocket propelled grenade] and you are gone. Your life is on the line every second that you are on the fence," he says. Australians have a history of taking up arms abroad. In the 1930s, Spanish Australians fought on both sides of the Spanish Civil War and, in the 1990s, Australians fought for Serbia, Croatia, Bosnia, Albania, Slovenia and Macedonia in the Yugoslav wars. Jewish Australians have fought in all of Israel's wars from 1948 onwards. When Greek-Australian Stephen Adgemis' growing marketing business precipitated a move to Athens in 1992 he knew that army service was part of the deal to get Greek citizenship. But it wasn't until 2002, following ten years of red tape, that his Greek identity was established with authorities and he was sent for six months of army training in Crete. "I wasn't motivated to go in … having a business and having to take six months off was hard," he says.

Greece has mandatory conscription for all men aged between 19 and 45. Adgemis, now 52, was 40 when he undertook his training, which involved boot camp, weapons training and learning army protocols. "Being older I think I saw it from a different perspective. It was an interesting experience. I can't say it was the best experience of my life, but it does discipline people and that is important." Never coming close to combat was a relief for Adgemis although he did feel "nervous" about his safety due to the strained relationship between Greece and Turkey. If Greece is at war Adgemis could still be called upon to assist. While he admits this is "disconcerting" he feels confident, in light of his age, he'd be tucked away safely behind a desk.

* Name has been changed to protect anonymity.