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A former special forces colonel, government minister Al Carns was this week on manouevres warning that the UK must ready itself for war with Russia.

“The shadow of war is at Europe’s door once more. That’s the reality. We’ve got to be prepared to deter it,” he said, in comments that go beyond previous admonitions 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 rally the nation to support a armed campaign?”

It was blunt language from the 45-year-old born in Scotland MP, who has had an remarkably rapid rise to his role of armed forces minister.

Rapid Rise to Prominence

And inevitably for a politician with a history of service in the armed forces, there is speculation 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 governing party MPs think there could be a real prospect of Carns being a candidate if and when the opportunity arises.

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

But there is also the risk of being over-promoted 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 political instincts to make it to the top.

Military Career and Transition

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

It came as a shock when he left the armed forces after 24 years of service to run 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 earmarked as a talent, the prime minister appointed him as a junior veterans minister straight after the 2024 election. He was elevated later that year to the more prominent position with a portfolio covering all the military.

Public Profile and Partisan Combat

With a commanding presence, Carns has been an periodic spokesperson for the government, and has been an effective political attack dog when criticising rival parties over issues of national security.

He has also found time to set a new global benchmark this year along with former military colleagues by ascending the world's highest peak in under five days without acclimatising on the mountain, using xenon gas.

Ambitions and Party Skepticism

His name entered the conversation as a possible future leader seriously around the time of a deputy contest last autumn, when his supporters began sounding out MPs 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, profiles of Carns have begun to appear in the media, with one newspaper presenting him as the “Action Man” that some were trying to prevent from ousting the prime minister.

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

“There’s no evidence that being senior in the military equates to being any good at politics any more than being a top prosecutor,” says one MP. “He is an unknown quantity.”