The Ministry of Defence is preparing to call up thousands of veterans as part of a large-scale exercise next year designed to test Britain’s military preparedness for potential conflict. The unprecedented drill, described by Armed Forces Minister Louise Sandher-Jones as operating “on a scale that we haven’t seen for a very long time,” will put the armed forces’ mobilisation procedures under intense scrutiny. The exercise forms part of a broader push to strengthen national resilience amid growing geopolitical uncertainty and pressure to increase defence spending.
Veterans to Be Called Up for Large-Scale Drill
The upcoming 2027 exercise will involve an as-yet unspecified number of personnel from the UK’s strategic reserve, a pool that includes approximately 95,000 retired regular and reserve officers across the Army, Navy, and Royal Air Force. The drill aims to test the military’s ability to rapidly recall and deploy former service members in the event of a national emergency. Sandher-Jones, who herself serves in the strategic reserve after a distinguished career as an Army intelligence officer, acknowledged that many reservists had previously treated their status as little more than a formality. “Certainly when I left the Army and found out I was in the strategic reserve, I just filed it away and never thought about it again,” she told the House of Lords national resilience committee. “We are definitely no longer in that space – the strategic reserve is a real commitment for those who are in it, and they will be exercised as part of our exercise programme next year.”
Defence Spending Under Scrutiny as Mobilisation Plans Expand
The mobilisation exercise comes at a time of increasing pressure on the government to bolster defence capabilities. NATO figures suggest the UK spent around 2.4% of GDP on defence last year, with calls mounting to raise this to 3% by the end of the decade. In response, the Ministry of Defence has moved to extend the upper age limit for strategic reserve members from 55 to 65 and lowered the threshold for call-up, making a larger pool of former personnel potentially available for future operations. The changes follow criticism from senior military figures, including Chief of the Defence Staff Air Chief Marshal Sir Richard Knighton, who warned earlier this year that the armed forces lacked an effective system for engaging reserve personnel. A major public awareness campaign is also being planned, encouraging citizens to prepare emergency supplies such as tinned food and bottled water in the face of extreme weather events or cyber attacks.
Young Recruits and Cadet Expansion Targeted in New Recruitment Drive
While the focus remains on reactivating experienced veterans, the government is also looking to younger demographics to strengthen future military readiness. A new military “gap year” programme, announced in December, is currently recruiting its first cohort of 150 students, with applications open until March 2027. Sandher-Jones indicated that the scheme could be expanded more quickly if it proves successful. She emphasised the military’s role in addressing youth disengagement, noting that the armed forces “have a role in combatting Neets” – the official term referring to the roughly one in eight young people not in education, employment, or training. Expanding cadet programmes in schools is among the measures being considered to foster early engagement with military service. Sandher-Jones also praised Finland’s recent civil defence exercise – the largest in Europe since World War Two – as a model for enhancing domestic preparedness.
Why it Matters
This mobilisation exercise signals a significant shift in the UK’s approach to national defence, reflecting both evolving security threats and the government’s determination to project military readiness. By involving tens of thousands of veterans in large-scale drills, the MoD is not only testing its logistical capabilities but also sending a clear message to allies and adversaries alike about Britain’s commitment to collective security. As defence budgets come under renewed political pressure and public attention turns to emergency preparedness, the outcome of these exercises may well shape the trajectory of UK defence policy for years to come.
