Australia's first female Army Chief - Lieutenant General Susan

On April 13, 2026, the Australian government made a historic decision to appoint a woman as the head of the Australian Army for the first time in its 125-year history. Accordingly, Lieutenant General Susan May Coyle is set to assume the duties of Chief of Army as the successor to Lieutenant General Simon Stuart, who will retire next July.

This appointment, made in the year the Australian Army, established on March 1, 1901, celebrates its 125th anniversary, marks a unique milestone not only for the Army but for the entire Australian Defence Force (ADF). This is because she becomes the first woman to lead one of Australia's three armed forces: Army, Navy, or Air Force.

Commenting on this appointment, Australian Defence Minister Richard Marles stated that this is a deeply historic moment that should be uniquely noted. He further emphasized that this decision will be extremely important for all women currently serving in the Australian Defence Force, as well as those hoping to join in the future. The Minister also quoted a previous statement by Lieutenant General Coyle herself: "You cannot be what you cannot see." Women have been joining the Australian Defence Force since 1899, and currently, they represent 19.2% of the entire defence force. She is also the third woman in the history of the Australian Defence Force to be promoted to a three-star rank.

Susan Coyle, born on May 21, 1970, in Kyogle, New South Wales, is the second of four children. Her sister Alice joining the Signals Corps of the Australian Army Reserve in the 1980s was a significant motivation for her to also join military service. Having experienced a transient childhood due to military postings, she received her education at Oxley High School in Tamworth and won an ADFA scholarship. She began her military career in 1987 by joining the 12/16 Hunter River Lancers Regiment of the Reserve Force, earned a Bachelor of Science degree from the Australian Defence Force Academy (ADFA) in 1991, and joined the Royal Australian Corps of Signals as an officer in 1992.

During her long 39-year military career, she has held numerous senior command positions, including in communications, information warfare operations, and joint operations. She actively contributed to operations in East Timor in 2002 and the Solomon Islands in 2004. Furthermore, she served as Deputy Commander of the Joint Task Force in Afghanistan during 2014-2015, and in 2020, she became the first woman to command a Joint Task Force (JTF 633) in the Middle East. Holding positions such as Head of Information Warfare Operations and Army Commander during 2021-2024, she was promoted to the rank of Lieutenant General in July 2024. Subsequently, she was also appointed as Chief of Joint Capabilities, becoming the first woman to lead a warfare domain such as space and cyber. A Master's degree holder in Defence Studies and Strategic Studies, she has received numerous national and international awards during her service, including the Order of Australia (AM), Conspicuous Service Cross (CSC), and Distinguished Service Medal (DSM).

Lieutenant General Coyle, whose hobbies include musical theatre, reading books, and traveling, is married to Mark, an officer in the Royal Australian Engineers, and they are parents to three children. Her historic appointment is a key part of the broader changes made to the Australian Defence Force's top leadership. Concurrently, the government has further announced that the current Chief of Navy, Vice Admiral Mark Hammond, has been appointed as Chief of the Defence Force, and Rear Admiral Matthew Buckley as the new Chief of Navy.