Exercise Cambrian Patrol 2026 has expanded to become the largest of its kind in the event’s 67-year history. Widely respected as NATO’s toughest patrolling test, the exercise is currently underway in mid-Wales, running from 2 to 13 October 2026. To cater to growing demand from UK units and international partners, the exercise has expanded its phases to accommodate a record-setting field of participants.
Hosted by Headquarters 160th (Welsh) Brigade, the two-day, 48-hour mission is designed to push eight-person teams to their absolute mental and physical limits.
This year, a total of 140 patrols have entered, including 75 Regular, 15 Reserve, and 13 University Officer Training Corps patrols, alongside 35 international patrols and two combined British Army and international patrols.
Following a kit inspection at Beulah, teams congregate in the vicinity of Builth Wells. Subsequently, they are required to traverse the challenging and inhospitable landscape of the Welsh mountains, with distances extending to approximately 40 miles (roughly 64 kilometres). Every soldier must carry their own rifle and personal kit, weighing a combined total of roughly 25kg (55 lbs).
The exercise terminates at Sennybridge, where patrols accomplish one of the most demanding evaluations within military training, with accumulated points establishing whether they obtain a gold, silver, or bronze medal.
Teams face a relentless series of realistic battlefield challenges, including casualty evacuations, intelligence gathering, artillery fire planning, mock CBRN (chemical, biological, radiological, nuclear) incidents, and minefield crossings.
A key characteristic of this year’s exercise is its focus on small unit leadership, positioning junior commissioned and non-commissioned officers in a demanding setting where they are required to make critical decisions, sustain operational momentum despite pressure, and guide fatigued personnel through intricate tactical challenges.
Reflecting lessons learned from the Ukrainian conflict, this year’s exercise also integrates a Russian-style defensive trench system to test modern tactical skills.
The exercise has further refined its emphasis on sustained surveillance, incorporating insights derived from contemporary military engagements. Patrols will be monitored by both ground forces and unmanned aerial systems (UAS), requiring deliberate evaluation of movement patterns, concealment strategies, and route selection.
Operational mobility and defensive survivability activities, encompassing transit across the Forward Line of Own Troops (FLOT), watercourse crossings, and minefield traversal during intelligence-gathering operations, additionally demonstrate alignment with present-day combat conditions.
The escalating significance of integrated networks and information systems has been incorporated into the current exercise framework. Patrols shall employ secure facilities, fixed surveillance sensors, and UAS platforms to establish a comprehensive intelligence assessment progressively, synthesising data from diverse sources to detect and communicate target information.
Major Darren Pridmore, Officer Commanding Exercise Cambrian Patrol, said: “This is all designed to test the skills that soldiers need to survive and fight on the modern battlefield. It is a demanding assessment of leadership, resilience, tactical judgement and teamwork under pressure.”
“We’ve preserved the spirit of Cambrian Patrol while adapting it to reflect the realities of contemporary conflict.”
“From drones and persistent surveillance, to intelligence integration and CBRN readiness, this year’s exercise better reflects the challenges soldiers can expect to face on operations.”
“The battlefield is evolving rapidly and success increasingly depends on close collaboration between operators, innovators and industry.”
“Cambrian Patrol provides a unique opportunity to bring those communities together, helping us adapt faster, exploit emerging technologies and maintain operational advantage.”
Exercise Cambrian Patrol was first established in August 1959 by a group of Welsh Territorial Army (now Army Reserve) soldiers and Welsh British Army Major-General Lewis Pugh DSO. Originally designed as a strenuous weekend training event, it took place in the rugged Cambrian Mountains of mid-Wales.
It began primarily as a long-distance marching event from Tonfanau on the west coast of Wales, which culminated in a competitive shooting match at the Sennybridge Training Area (SENTA). Throughout the 1960s and 1970s, it remained a “march and shoot” competition using 7.62mm Self-Loading Rifles (SLRs), covering roughly 70 miles over four days. It wasn’t until the 1980s that it transitioned into the multi-phase tactical patrolling format used today.
