In 1840, Dost Mohammed found himself fleeing from the Emir of Bukhara and his dubious hospitality. He and his forces met British General Robert Sale's troops at Parwan Darra on 2nd November of the same year. Despite the British's industrial revolution, the handcrafted Afghan jezail and sword were far superior to their British counterparts, and this allowed Dost Mohammed to emerge victorious. The 2nd Bengal Cavalry, who were Indian troops, failed to follow their officers' orders to charge towards Dost Mohammed, citing their objection to the English sabres. As a result, many British officers were killed, and although Sale called it a victory, it was referred to as a disaster by many, including Atkinson, the army's surgeon general, and Kaye. Despite his victory, Dost Mohammed Khan surrendered to the British that same evening. Sultan Muhammad Khan Safi was the first to arrive at the British camp, followed by Dost Mohammed Khan himself, who arrived shortly after. The reason for Dost Mohammed's surrender was due to the rumours of assassination plots against him. He was sent into exile in India, where he remained until his eventual return to Afghanistan in 1843. It is worth noting that Sale's campaign left a trail of devastation, and the lack of success achieved during the campaign meant that Dost Mohammed's surrender did not come at a significant cost to him.