Mongol sack of Lahore
A Mongol army stormed Lahore after the Delhi Sultanate failed to relieve it, and left the city in ruins for decades.
Lahore's governor fled and the city was taken and plundered. For much of the thirteenth century the western Punjab was a frontier between the Mongols and the Delhi Sultans, and Lahore was only slowly rebuilt.
Same era
Invaders at the gates, 1400 BCE – 1221A Rigvedic battle on the Parushni, the Ravi, in which the Bharata king Sudas defeated ten allied tribes when they tried to divert the river.
Alexander crossed the flooded Jhelum by night and defeated Porus and his war elephants. Impressed by Porus, he returned his kingdom to him.
Retreating down the Jhelum and Chenab, Alexander attacked the Malli. Scaling a town wall almost alone, he was shot through the chest and nearly died. The town is often placed at or near Multan.
Mahmud's first great victory in India, which broke the Hindu Shahi kingdom and opened Punjab to two decades of raids.
Mahmud's second great victory over the Hindu Shahis, on the plain of Chach near Attock, which left the Punjab open to him.
Prithviraj Chauhan routed the Ghurid army near Thanesar; Muhammad of Ghor was wounded and carried from the field.
A year after losing on the same field, Muhammad of Ghor beat Prithviraj with mounted archers, opening north India to the Delhi Sultanate.
Genghis Khan caught the last Khwarazm prince on the Indus. Jalal ad-Din rode his horse off a cliff into the river and escaped into Punjab, drawing Mongol raids after him. The exact site, somewhere on the Indus, is uncertain.