The advice was issued on Thursday 22 March 2001 EDT Australians who are also citizens of another country might be liable for military service and for prosecution of offences committed under its laws outside that country. Australian travellers are advised to check whether they possess dual nationality before leaving Australia. Whether or not you are a dual national depends on the laws of the countries involved. A person may be considered and treated as one of its nationals by another country even when that person does not accept that nationality.
Many countries have laws that prevent citizens giving up their nationality.
In some countries, a woman may also automatically acquire her husband's nationality on marriage. Liability for Military service Dual nationals may be liable for military service in the country of their other nationality. Countries where Australia is aware that this problem has arisen include Egypt, France, Greece, Iran, Italy, Lebanon, Singapore, Syria, Turkey and most countries of Central and Eastern Europe. Travellers should check with the embassy or consulate of relevant countries if they have any concerns. Dual nationals are advised to check their military service obligations before leaving Australia.