Humber series of Armored Cars was created from Karrier KT 4 artillery tractor chassis and the armoured body of the Guy Armoured Car. These were used in the Reconnaissance Regiments of the British Infantry Divisions. Humber Mk.3 had a larger three man turret allowing for a wireless operator freeing the vehicle commander.
Good against half tracks and infantry. If any enemy AT around I usually park behind a hedge to maintain presence on the front line. Remember dedicated recon and AT don’t maintain presence so can’t hold the line. Good for extending the line early.