Well if Portsmouth can count for being very desperate. The Bovington Mk IV male tank, for that's what it is was used for patrolling the wide open spaces of Whale island Royal Navy gunnery school during WW2.
Russia is reputed to have used a couple of Mk V 'Rikardo's' to hold back the Germans at the gates of Stalingrad in 1942, but the tank in the picture is a Mk IV.