The Birthday Ballot


Introduction of national service

Often known as conscription, the National Service Scheme was introduced by the Menzies Government in November 1964.

Popular belief holds that the scheme was conceived specifically for Vietnam. Although untrue, the close timing of its introduction and Australia's growing commitment to the war made it seem so to many people.

In late 1964, the Australian Government had yet to decide on increases to the number of Australian troops in Vietnam. In fact, the government was more concerned about the regional implications of the Confrontation between Malaya and Indonesia, particularly its potential to spill over the border of Papua New Guinea for which Australia had defence responsibility. Small numbers of national service men served in Sarawak, a Malayan state on the island of Borneo, in early 1966 towards the end of Confrontation.

The first Australian service men reached Vietnam in mid 1966, several months before the official end of Confrontation on 11 August.

Bi-annual ballots

Under the National Service Scheme, Australian men aged 20 years were required to register with the Department of Labour and National Service (DLNS). Those who registered were then subject to a ballot, drawn twice a year.

If their birth date was drawn, they might be subject to 2 years of continuous full-time service in the regular army, followed by 3 years part-time service in the Army Reserve. As part of their duty, national service men on full-time duty were liable for 'special overseas service', including combat duties in Vietnam.

The number of men eligible for call-up far exceeded the number needed for military service. The government used its bi-annual ballot to determine who would be considered for national service.

The ballot resembled a lottery draw with ballot balls. The final five ballots were even televised. Numbered marbles representing birthdates were chosen randomly from a barrel.

Within 1 month of the ballot, the men whose numbers had been drawn were advised by the DLNS of whether they were required for participation in the scheme or not.

Those eligible men who failed to register without an acceptable explanation were automatically considered for call-up, as well as being liable to a fine.

Various categories of men eligible for national service were granted either indefinite or temporary deferments. Applications were considered individually and only after the ballot had been drawn.

Selection process

Men for whom no exemption applied and who were selected for call-up were required to be as fit as those enlisting in the regular army. The process involved a medical examination by a civilian doctor.

If they passed the medical test, they had an interview and then a security check carried out by the Attorney General's Department, the Australian Secret Intelligence Organisation (ASIO) and the Commonwealth Police.

Men who passed these three tests were usually given 1 month's notice before having to report for military service.

Men who failed to comply, who misled the medical board and who made false and misleading statements were liable to prosecution. If convicted, they were sentenced to prison for a period equivalent to that which would have been spent on national service. In this way, 14 Australian men were prosecuted.

Up until 1968, they were incarcerated in military prisons. Later, they served their time in civilian jails.

Those who served and died in Vietnam

Between 1964 and December 1972, when the Whitlam Government suspended the scheme:

  • 804,286 20-year-olds registered for national service
  • 63,735 national servicemen served in the Army
  • 15,381 served in Vietnam

Between 1966 and 1971, Australian infantry battalions were typically comprised of an even mix of regular soldiers and national service men.

Some 200 national service men died in the Vietnam War.

Last updated: 19 February 2021

Cite this page

DVA (Department of Veterans' Affairs) (2021), The Birthday Ballot, DVA Anzac Portal, accessed 29 January 2023,
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