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A former special forces colonel, government minister Al Carns was this week on manouevres cautioning that the UK needs to be preparing for war with Russia.

“The shadow of war is knocking on Europe’s door again. That’s the reality. We’ve got to be prepared to prevent it,” he stated, in remarks that go beyond previous warnings by his boss, the defence secretary.

“As a whole society – what is their role if we get caught in an existential crisis, and what do they need to be aware they need to do and what they can’t do, and how do we mobilise the nation to support a military endeavour?”

It was blunt language from the 45-year-old Scottish-born MP, who has had an remarkably rapid rise to his role of minister for the military.

A Swift Political Ascent

Naturally for a politician with a history of service in the armed forces, there is conjecture about whether he is a potential future leader – as with, at various points, previous colleagues from a service background before him.

This time, however, some ruling party MPs think there could be a genuine possibility of Carns being a contender if and when the opportunity arises.

One of the reasons for that is that Carns has been involved in politics for longer than it seems, as a former military adviser to three previous defence secretaries.

But there is also the danger of being overhyped as a politician with a personal history colleagues think will appeal to the public – without enough consideration of whether they have the track record and shrewdness to make it to the top.

Military Career and Transition

Carns was born in Aberdeen, and state educated, before enlisting in the Royal Marines in 1999 at the age of 19. He advanced his career and was awarded the Military Cross in 2011 “in recognition of gallant and distinguished services in Afghanistan”.

It came as a surprise when he left the armed forces after 24 years of service to stand as an MP in Birmingham Selly Oak, just prior to he was due to be promoted to brigadier.

And in a sign he was immediately identified as a talent, the prime minister appointed him as a junior veterans minister straight after the 2024 election. He was promoted later that year to the more senior role with a portfolio covering all the military.

Public Profile and Partisan Combat

With a commanding presence, Carns has been an occasional media performer for the government, and has been an effective political attack dog when putting pressure on rival parties over issues of national security.

He has also found time to break a world record this year along with former military colleagues by ascending the world's highest peak in under five days without acclimating on the mountain, aided by xenon gas.

Leadership Speculation and Internal Caution

His name was floated as a possible future leader in earnest around the time of a deputy contest last autumn, when his backers began canvassing colleagues about a run for the job. That failed to get off the ground, with the prime minister's office strongly supporting another candidate.

Since then, feature articles of Carns have begun to appear in the media, with one newspaper presenting him as the “Action Man” that some were trying to stop from challenging the prime minister.

While some MPs think he could be prime ministerial timber, others think he is making himself appear overly eager when there is no vacancy at the top. There is also a wariness about the rapid rise of a star performer from outside politics.

“It's not proven that being senior in the military translates to being any good at politics any more than being a top prosecutor,” says one MP. “He is an unknown quantity.”