An Cosantóir

An Cosantóir July / August 2025 www.military.ie/magazine 22 | CAN YOU GIVE ME A BRIEF DESCRIPTION OF YOUR CAREER SO FAR? I began my journey in the Defence Forces in December 2006, training with the 12th Battalion in Clonmel, an intense experience that laid the foundation for my career. After completing training in 2007, I was assigned to the 1 Brigade Artillery Regiment, as it's now called. I underwent a gunnery course in Mullingar, qualifying me to operate weapons like the 81mm mortar, 120mm mortar, and 105mm gun, which prepared me for overseas service. In 2008, I deployed to Chad, a life-changing mission that remains one of my greatest experiences. In 2014, I served with the Reconnaissance Company in UNIFIL in Lebanon, navigating complex operations. From 2015 to 2016, I completed the Potential Non-Commissioned Officer (PNCO) course at 1 BTC, a key step in my leadership growth. In 2018, I undertook the Artillery Standard Course, leading to another UNIFIL deployment that year. Between 2019 and 2022, I completed courses in the RBS 70 anti-aircraft system, map and navigation instruction, and the .50 Heavy Machine Gun. During this time, I trained recruit platoons and potential NCOs, sharing my expertise. In 2022, I transferred to 1 BTC as a Corporal, completing the All-Arms Standard Course and the Infantry Light Support Weapons Course. Promoted to Sergeant in 2023, I served as Platoon Sergeant for the 171 Recruit Platoon and successfully interviewed for my current role as a Training Sergeant at 1 BTC. In 2024, I completed the Live Fire Tactical Training (LFTT) course and led the 174 Recruit Platoon as Platoon Sergeant. In 2025, I finished instructing the 25th PNCO course, continuing my passion for shaping future soldiers. WHAT MADE YOU DECIDE TO JOIN THE DF? My grandfather and uncle both served in the 4th Battalion at Collins Barracks, which sparked my interest in the military. However, the defining moment came during my transition year in school when the Army conducted a recruitment campaign. Their stories of adventure, camaraderie, and service inspired me, and I knew instantly that joining the Defence Forces was the path I wanted to pursue. WHAT WAS YOUR PROUDEST MOMENT SO FAR IN THE DF? Becoming a Sergeant was a significant milestone, but when I reflect deeply, my proudest moment was serving in the EUFOR mission in Chad in 2008. At just 21, being part of such a meaningful operation in a challenging part of the world was incredible. It taught me resilience and teamwork, lessons that have stayed with me and shaped my career. WHAT WAS YOUR MOST CHALLENGING MOMENT SO FAR IN THE DF? Being away from my family during overseas deployments is always tough, especially with young children at home. The emotional strain of separation is a significant challenge, but the support of my loved ones and colleagues helps me persevere through those difficult times. CAN YOU GIVE ME A BRIEF DESCRIPTION OF A TYPICAL DAY IN YOUR JOB? As a Sergeant overseeing training courses—whether for weapons, recruit induction, or NCO development—my day focuses on ensuring everything runs smoothly. I coordinate with instructors to confirm that students receive top-quality training and have all necessary resources, from equipment to materials. Planning and preparing for field exercises is a major responsibility, ensuring all equipment is ready and tasks are executed effectively. I also mentor students, addressing their needs to create a supportive learning environment. PEOPLE OF THE DF NAME: RANK: YEAR JOINED: CURRENT UNIT: MISSIONS OVERSEAS: UNITS SERVED: CHRISTOPHER O'SULLIVAN SGT 2006 1 BTC 98 INF BN CHAD, 45 INF GP UNIFIL, 113 INF BN UNIFIL 1 BAR, 1 BTC Delivering orders to my first recruit platoon as Platoon Sgt

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