 Complete the following phrase:  On 31 October the regiment rejoined 4th Indian Division in the WDF, now renamed Eighth Army, at Sidi Hamish. Operation Crusader began on 21 November and the division advanced to Fort Capuzzo and Sidi Omar, where it established itself among the Omars, a series of mounds that had previously been entrenched by the Italians. The regiment utilised the good fields of fire from this position, and 233 and 234 Btys both had their first anti-tank shoots, using 6-inch howitzers and 4.5-inch guns against Panzers. The gunners lay down as the tanks approached until at both batteries, a field regiment and a Bofors gun battery all opened up, destroying at least eight tanks. 234 Battery was especially vulnerable, being outside the defences, but got off the last shots as the Germans retired. After a week at the Omars, 68th Med Rgt moved up to support 2nd South African Divisions operations against Bardia in December 1941 and January 1942, with Lt-Col Dimoline commanding a mixed artillery group consisting of his own regiment with South African and Polish field artillery. At one point 234 Bty guided by an air OP managed to sink an enemy ship at Bardia. Crusader ended when Bardia surrendered on 17 January, with the enemy driven out of Cyrenaica and the 