and most of the WDF was moved up to the port. An additional armoured car company joined reconnaissance operations far behind the front line. The WDF had been reinforced with a new tank regiment with Matilda II tanks. Rather than wait for the Italians, the British began after about a month to prepare a raid of 4–5 days' duration on the central group of the Italian encampments and then on Sofafi. Operation Compass In December 1940, the 10th Army in Egypt had been reinforced with the 1st and 2nd Libyan divisions and 4th Blackshirt Division, in the fortified camps from Sidi Barrani to the Tummars and Maktila. The Maletti Group was based at Nibeiwa, the 63rd Infantry Division Cirene at Rabia and Sofafi, the 62nd Infantry Division Marmarica was on the escarpment from Sofafi to Halfaya Pass and the 64th Infantry Division "Catanzaro" was east of Buq Buq, behind the Nibeiwa–Rabia gap, supported by about 500 aircraft of the (General Felip Porro). The RAF attacked airfields on 7 December and destroyed 39 aircraft on the ground. Operation Compass (Battle of Marmarica/Battle of the Camps), began when Selby Force advanced from Matruh to isolate Maktila early on 9 December. The 4th Indian Division and the 7th Royal Tank Regiment (7th RTR) attacked Nibeiwa at dawn and overran the camp, then moved on Tummar West, which fell in the afternoon. A counter-attack from Tummar East was repulsed and the camp taken the next day. Battle of Sidi Barrani A 7th Armoured Division screen to the west prevented the reinforcement of Sidi Barrani and on 10 December, the British cut the coast road and the 7th Armoured Division mopped up around Buq Buq, taking many prisoners. On 11 December, the Italians were defeated at Sidi Barrani; Rabia and Sofafi were abandoned and the 7th Armoured Division pursued along the coast and the escarpment. Late on 14 December, the 11th Hussars cut the Via Balbia between Tobruk and Bardia, captured Sidi Omar on 16 December and forced the Italians to retreat from Sollum and Fort Capuzzo to Bardia, leaving garrisons at Siwa Oasis and Giarabub in the south. From 9 to 11 December, the British took 38,300 prisoners, 237 guns, 73 tanks and about 1,000 vehicles for 624 casualties. Battle of Bardia Bardia fell between 14 December and 5 January 1941; the British suffered 456 Australian infantry casualties and lost 17 of 23 tanks,