LT Fitzgerald first enlisted in to the Australian Army in 2008 as a rifleman. He spent time at 2RAR and Combat Training Centre – Live before discharging in 2012. In 2018 he entered the Royal Military College to commission as an officer, graduating in to the Royal Australian Artillery in 2019 and eventually posted to the School of Artillery. In 2020 he completed the Regimental Officer Basic Course before working as Troop Commander at 53 Battery, which provides training support to the School of Artillery as well as Combined Arms Training Centre. In 2021 he will be posting to 107 Battery at 4th Regiment, Royal Australian Artillery as a Troop Commander and CPO.