In Wilkie's early career she served as a platoon commander with the Army's Recruit Training Battalion, as an instructor at the Royal Military College, Duntroon, and as the ARA staff with the Army Reserve 140th Signal Squadron. In 1993, she served in Cambodia as Adjutant of the Australian Force Communication Unit with the United Nations Transitional Authority in Cambodia. Wilkie commanded 136 Signal Squadron. She then became the first female commanding officer of the Royal Military College, Duntroon, and then the first female Commandant at the Army Recruit Training Centre at Kapooka. In 2007 she went to Iraq as Assistant Chief of staff of General David Petraeus's Multi-National Force during the Iraq War troop surge of 2007, working under the Chief of Staff, Major General John M. Paxton Jr. Petraeus's headquarters, which was made up of about 1,800 personnel, was split between the Embassy site in Baghdad and Camp Victory. Wilkie was in charge of many of the activities at the former, noting that: Wilkie was awarded the United States' Bronze Star Medal for her service in Iraq. In 2008 Wilkie was appointed a Member of the Order of Australia in the Australia Day Honours "for exceptional performance of duty in command appointments within Training Command - Army". On promotion to brigadier in 2009 she became Director General of Training at Headquarters Forces Command at Victoria Barracks, Sydney, responsible for most of the Army’s training. In 2011 Wilkie became the Australian National Commander in Afghanistan. As such, she was responsible for the 1,500 Australian personnel serving with Australian and international forces in the combat zone. Her job also involved liaising with the commander of the International Security Assistance Force in Afghanistan, General John R. Allen. She was awarded the Commendation for Distinguished Service "for distinguished performance of duty in warlike operations as Assistant Commander - Afghanistan, Joint Task Force 633 on Operation Slipper from September 2011 to August 2012." After returning from Afghanistan then Brigadier Wilkie was posted as the Chief of Staff to the Chief of Army at Army Headquarters in Canberra. In March 2013 the Minister for Defence, Stephen Smith, announced that she would be promoted to major general and will take over as the Commander of the Australian Defence College in Canberra, commanding the Australian Defence Force Academy, Australian Command and Staff College and the Centre for Defence and Strategic Studies. There had only been five women of two-star rank in the Australian Defence Force. As a result of an Australian Government review into the structure of the Australian Department of Defence, Wilkie was appointed as the Head of Joint Enablers in July 2015. In this position she retained her previous role and added responsibility for ADF Joint Health, Joint Logistics and Cadet and Reserve Policy. In late 2014 Wilkie was appointed to the Commission of the Australian Football League, the governing body of Australia's football code. She is also a patron of the ADF Women's Australian Rules Association and the ADF Hockey Association, and chairs the ADF Sports Council. Wilkie retired from the Australian Army in 2018.
Personal life
Wilkie married Andrew Wilkie, a fellow army officer in 1991. They divorced in 2003. She is currently married and lists her leisure activities as home renovation, and playing field hockey and golf. Asked if she had any advice for young women, Wilkie said: "If you want to serve your country, your gender is not an issue."
