Early in 1762 Ahmad Shah Abdali returned to the Punjab determined to crush the Sikhs. The Dal Khalsa, with its families, was moving south through the Malwa towards the safety of the deserts, a great convoy of perhaps thirty to fifty thousand people.
On 5 February 1762, near the villages of Kup and Rahira near Malerkotla, Abdali's army, which had marched at great speed, caught the convoy. The Sikhs formed a moving square, the fighting men around the women, children and old people, and fought their way forward for miles under constant attack. Jassa Singh Ahluwalia was wounded many times.
By the end of the day perhaps twenty to thirty thousand Sikhs had been killed. It was the Vadda Ghallughara, the Great Holocaust, the worst single day in Sikh history before 1984. Abdali went on to Amritsar and blew up the Harmandir Sahib. Yet within months the Sikhs were back in the field, and in October they faced him again at Amritsar.