Saint-Denis, who was born in Nimes, southern France, formed part of the French Army Special Forces when he joined aged 18.

“Most of my work as a Special Force operator was in the sub-Saharan area. So Mali, Burkina Faso, Niger. I was mostly there against Boko Haram,” says Saint-Denis.

Boko Haram is a militant Islamist group, designated as a terrorist organisation by the United Kingdom, which operates in countries such as Nigeria, Niger and Mali.

Saint-Denis’ work largely involved working in counter-terrorism to combat the threat of groups like Boko Haram.

“When we are talking about counter-terrorism, it’s going to be the arrest or the destruction of terrorist threats. Or stopping terrorist extractions in cities like Timbuktu, for example,” Saint-Denis says.

His team were also tasked with protecting important members of the French government, like Hollande, during foreign visits.

Saint-Denis looks back on his time in the French military fondly.

“It was long and fatiguing and demanding, and after this I think I was a man – I was disciplined, and I knew how to work to get things done,” he says.

“It was very adventurous, and I loved it.”

Fighting terrorism and competing in the UFC are vastly different worlds with pressures of their own, but Saint-Denis does not have to dwell for long when deciding which is tougher.

“It depends on the occasion, but globally, I would say being a UFC fighter,” he adds.