Battle of Mudki
The first battle of the First Anglo-Sikh War was fought at Mudki, near Ferozepur, a week after the Sikh army crossed the Sutlej. The British held the field after a fight that ran into the night, at a cost of 872 killed and wounded.
The Sikh army began crossing the Sutlej on 11 December 1845, into territory of its own on the far bank, and on 13 December Lord Hardinge declared war. The Encyclopaedia of Sikhism's war entry says the army then spread out in a wide arc from Harike to Mudki and Ferozeshah, without pressing on Ferozepur, which it blames on the Sikh minister Lal Singh.
Sir Hugh Gough's army arrived from Ludhiana and met the Sikhs at Mudki on 18 December. The entry says Lal Singh left the field early and his men fought on without him until about midnight. The Sikhs withdrew, losing 17 guns.
British losses included the Quartermaster-General, Sir Robert Sale. Hardinge offered to serve as second-in-command under his own commander-in-chief. Wikipedia's summary breaks the British total into 215 killed and 657 wounded, and estimates about 300 Sikh dead.[EoS][Web]