Brigadier Limmer graduated from the Royal Military College Duntroon into the Royal Australian Corps of Signals in June 1998. Since this time, he has been fortunate to experience a range of signals appointments across land, special operations, strategic and training domains, as well as a number of broad all corps strategic-level roles. Brigadier Limmer’s key signals appointments include Commanding Officer of the Defence Force School of Signals and Director of the Land Command, Control, Communications and Computing Program in Army Headquarters. Broader appointments include Military Strategic Commitments and in Career Management as well as Incident Management within Army Headquarters. In 2023 he was fortunate to act as an Assistant Secretary in Contestability Division, within Strategic Policy and Industry Group. Brigadier Limmer assumed command of the 6th Brigade in December 2023. Brigadier Limmer has operational experience in Timor Leste on Operation WARDEN, in Afghanistan on Operation SLIPPER and Counter Terrorism/Special Recovery experience with Special Operations Command. In the 2017 Queens Birthday Honours, Brigadier Limmer was awarded a Conspicuous Service Medal for the provision and modernisation of joint communications and electronic warfare training during tenure as Commanding Officer of the Defence Force School of Signals. He has been awarded a Silver Commendation for commitments to operational and interagency planning during tenure Chief of Staff Military Strategic Commitments. Brigadier Limmer was also recognised with a Chief of Defence Force Commendation for the provision of operational communications support while a Sub-Unit Commander within the Chief Information Officer Group. Brigadier Limmer is married to Kylah and they have two daughters. He enjoys camping, ‘enduro’ and adventure motorcycle riding, watching rugby and cricket.

Brigadier Alison Creagh AM CSC (Retd) is a board director and strategic adviser with expertise across the veteran community, defence industry, cyber security and sports governance. She is President of the Certa Cito Foundation and Chair of the Veteran Community Business Chamber. She is a Trustee for the Commando Welfare Trust and a Non-Executive Director for GME, the Veterans Film Festival and The Hospital Research Foundation. Alison is President of Paralympics Australia and on the board of Rowing Australia. Alison has held roles as Strategic Defence Adviser for the Queensland Government, Defence Ambassador for the Australian Capital Territory and chair of the ACT’s Ministerial Advisory Council for Veterans and their Families. She was a Council Member on the Australian War Memorial Council, Strategic Adviser for UNSW’s Defence Research Institute, a member of AustCyber's Canberra Node Industry Advisory Group and President of Rowing ACT. Alison is also Honorary President of Paralympics Australia.