For the armourati, here is one of the Chieftain’s tank videos, this one featuring the A10 cruiser, which operated in CRUSADER with 7 Armoured Brigade’s 7 Hussars, part of 7 Armoured Brigade, 7 Armoured Division, and 1 R.T.R., 32 Army Tank Brigade, Tobruk Fortress. Some also served as HQ tanks.
The A10 were remnant tanks which had been delivered to Egypt quite a while before the operation, and were not considered up to current standards anymore. They went into action because of a lack of numbers. Their deficiency in every material aspect is demonstrated by the fact that the one squadron operating with 7 Hussars was lifted to the jumping off position on D-1 on transporters, while the A13 and A15 went on tracks. Moreover, the A10 was too slow to bring German tanks to battle, which means that they (being also outgunned) could not serve a conceivable purpose on the battlefield.