In January, the hostile forces on both sides of the Sutlej River in India were reinforced. The Sikhs recrossed the river, entered British territory, and hostilities were renewed. On January 27, Sir Harry Smith defeated a part of the Sikh forces at Aliwal. The Sikhs threw up intrenchments at Sobraon. On February 10, the British army advanced to the attack under Gough and Hardinge. The battle proved one of the hardest fought in the history of British India. Advancing in line, the British had two battalions mowed down by the Khalsa guns. Tej Singh broke down the bridge over the river. After fighting all day, the British at last succeeded in driving the Sikhs into the Sutlej at the point of the bayonet. The victory was dearly won. The British losses were 2,000 men, while the Sikhs were said to have lost 8,000. This practically ended the first Sikh war. The British army crossed the Sutlej River by means of their pontoons, and, pushing on to Lahore, there dictated terms of peace. An indemnity of a million and a half pounds was exacted. It was paid by Gholab Singh, the Viceroy of Cashmere and Jamu, upon British recognition of his independence of the Sikh Government at Lahore. The British frontier was extended from the banks of the Sutlej to those of the Ravi.