Battle of Ferozeshah
Three days after Mudki, British forces attacked the Sikh entrenchments at Ferozeshah in one of the hardest fights the British had in India. By their own account they came close to defeat in the night, but the Sikh army withdrew the next day.
Gough and Hardinge, joined by Sir John Littler from Ferozepur, attacked with 16,700 men and 69 guns on 21 December 1845. The Sikh batteries fired quickly and accurately, and the attack stalled as a frosty night came down. Gough later admitted to a critical and perilous state.
The Encyclopaedia of Sikhism quotes General Sir Hope Grant on Hardinge sending away his sword, a gift from the Duke of Wellington, in case the day was lost, and says retreat and surrender were discussed in the camp.
The same entry says Lal Singh left the army during the night and Tej Singh the next morning, 22 December, and that this let the British turn the battle. It charges both men with treason. This is the entry's interpretation, and the era history gives the dispute.
It gives British losses as 694 killed and 1,721 wounded, and Sikh losses as about 2,000 men and 73 guns. Wikipedia's summary agrees on the British figures and on 2,000 Sikh dead, and gives 70 guns.[EoS][Web]