The new head of the Army has warned the UK has three years to be ready to fight a war or deter conflict.

General Sir Roly Walker’s talked about an “increasingly volatile world” but he said war wasn’t inevitable and the Army had "just enough time" to prepare itself.

He says he wants to double the Army's fighting power in three years (and triple it by the end of the decade) and he’s stressed the need to modernise quickly using technology like AI.

Professor Mike Clarke and former army officer Ed Arnold, who’s now at RUSI, join Kate Gerbeau and reporter Sian Grzeszczyk Melbourne to discuss the plans and the future shape of the battlefield.

And in the latest of our series, we hear about the moment that made Andrew Fox after 8 years in the army… passing P Company to earn his maroon beret and become a Para.