Following the First Battalion Royal Welsh as they live, work and train - through every trial, every tradition and every triumph. Sergeant Major Fil Franco is given the task of mentoring the youngest recruits and challenges them to a relentless battle skills course in the Brecon Beacons. Junior Lance Corporal Carl Mason steps up as section commander but learns leadership is tougher than he expected and a fresh fusilier fires his first live round from the warrior turret
The Royal Welsh Regiment's most senior officer, Lieutenant Colonel Oliver Beard, must prove himself on the battlefield as a Warrior gunner if he is to lead his soldiers into war.
Two seasoned Sergeant Major's and their companies go head to head in the annual Prince of Wales competition. A back breaking thirty six hours of physical endurance, mental resilience and battle skills.