Although combat ready, the Scots Greys did not participate in the fighting around Tobruk in the late spring and summer of 1942. Because so many other armoured units were mauled in the fighting, the Scots Greys had to turn over their tanks to other units. In July 1942, the Scots Greys finally were committed to the fighting, equipped with a mixture of Grant and Stuart tanks. Unlike most tank units in the Eighth Army, which were either predominantly fielding heavy/medium tanks or light tanks, the Scots Greys field 24 Grants and 21 Stuarts. Temporarily attached to the 22nd Armoured Brigade, the Scots Greys were placed with majority of the British heavy armour. Initially held in reserve on Ruweisat Ridge, the Scots Greys conducted a successful counter-attack against the German forces to plug a hole that had been created by the German attack. Attacking as though still a mounted regiment, the Scots Greys fought the Panzer IV's of the 21st Panzer Division, eventually driving them back.