We ride inside one of his platoon's armoured personnel carriers (APC). The noise is deafening, even before its 30mm cannon opens fire on some farm buildings where they suspect Russians are hiding. Condensation drips from the metal roof, two dim lights emit a pale-green glow, and the vehicle's eight, sturdy wheels slip and slide through the mud, swaying us from side to side. I feel as if I'm in a submarine.