Kyiv, Ukraine – On a rain-soaked grassy field at a military training centre, a dozen Ukrainian army recruits are lined up in staggered formation with guns pointed forward in position to quickly pull the trigger.
They are practising formation drills on how to storm an enemy position. The drill sergeant yelling out commands is 23-year-old Diana*, who goes by the nickname Sledgehammer. She joined the military six months before Russia launched its full-scale invasion of Ukraine on February 24.
