سيدي براني
Selby Force guarded the eastern approaches to Sidi Barrani, as the rest of the WDF attacked the fortified camps further inland. On 10 December, the 4th Armoured Brigade, which had been screening the attackers from a possible Italian counter-attack from the west, advanced northwards, cut the coast road between Sidi Barrani and Buq Buq, and sent armoured car patrols westwards. The 7th Armoured Brigade remained in reserve, and the 7th Support Group blocked an approach from Rabia and Sofafi to the south.