 After several failed attempts to gain the walls, two soldiers broke through a bottleneck under fire despite both being wounded.They gained a foothold which the following troops exploited, enabling the walls to be taken.The Tibetans retreated in good order, allowing the British control of the road to Lhasa, but denying Macdonald a route and thus remaining a constant threat (although never a serious problem) in the British rear for the remainder of the campaign.