Perhaps
Battle of Moodkee
General Gough’s hard won victory over the Sikh army
of Lal Singh; the opening battle of the First Sikh War.
and The battle of Saragarhi fought by 36th Sikh (now 4 Sikh) in 1897, is an epitome of Valour, Courage, Bravery and Sacrifice. Havildar Issar Singh with 21 Other Ranks made the supreme sacrifice repulsing 10,000 of the enemy. This sacrifice was recognised by the British Parliament, when it rose to pay its respects to these brave young soldiers. All 22 were awarded the Indian Order of Merit (IOM), the then highest decoration for the Indian soldiers. This 'Kohinoor' of the Sikh Regiment is one of the ten most famous battles of the world. Even to this date, this battle forms part of the school curriculum in France. 12 September 1897, the day of the Battle of Saragarhi is celebrated as the Regimental Battle Honours Day.
try Amandeep Singh Madra & Parmjit Singh, Warrior Saints: Three Centuries of the Sikh Military Tradition (New Delhi, 1999)