Though principally based in Port Moresby, Aldred also had responsibility for running management courses in several of PNG's major regional centres.
[citation needed] In June 1973 Aldred returned to the Commonwealth Public Service Board in Melbourne as Industrial Information Officer.
Aldred had a three-month attachment to the Australian Regular Army over the summer of 1968–69, as a sergeant instructor in 1 Recruit Training Battalion (1RTB) at Kapooka in New South Wales.
[citation needed] Upon election as federal member for Henty in the Australian House of Representatives in the Liberal landslide of 13 December 1975, Aldred assumed a very active role in Coalition and Parliamentary Committees.
In 1985, he was elected by the Liberal Party to represent Australia at the United Nations General Assembly in New York, as the Opposition Parliamentary Adviser to the Australian Mission.
As a result of these inquiries, abuses of the Business Migration Programme were eliminated and significant reforms were made to Tax Office administration, including the introduction of the Charter of Taxpayers' Rights.
During the 1980s, Aldred successfully advocated for the immigration to Australia of a large group of Jewish refuseniks from the Soviet Union, when they had been refused admission by the federal Labor government.
In November 1989, Aldred and Senator Jim Short alleged that Labor MP Lewis Kent was "an agent of a foreign power" and had ties to the UDBA, the Yugoslav secret police.
[5] Aldred was disendorsed by the Liberal Party for Deakin in 1995 for the 1996 federal election and subsequently used parliamentary privilege to make allegations of involvement in espionage and drug trafficking against a prominent Jewish lawyer and a senior foreign affairs official,[6] using documents that were later found to be forged,[7] which had been supplied to him by LaRouche movement front organisation the Citizens Electoral Council.
The preselection saw Mary Aldred defeat sitting MP Russell Broadbent who was a parliamentary colleague of her late father.