Battle of Hydaspes 326 B.C.—Alexander the Great, defeated Porus, the Paurava king. Impressed by the valour of Porus, ultimately Alexander returned his kingdom to him. 

Battle of Kalinga 261 B.C.—Ashoka defeated the king of Kalinga. Ashoka embraced Buddhism and preached it during the rest of his life after this war. 

First Battle of Tarain or Thaneswar A.D. 1191  Prithvi Raj Chauhan defeated Mohammed Ghori. Second Battle of Tarain A.D. 1192—Mohammed Ghori defeated Prithvi Raj Chauhan. Ghori’s victory paved the way for the establishment of Muslim rule in India. 

First Battle of Panipat 1526—Babur defeated Ibrahim Lodhi. This laid the foundation of the Mughal rule in India. 

Battle of Khanwah 1527— Babar defeated Rana Sanga of Mewar. This battle resulted in the defeat of the powerful Rajput confederacy. 

Second Battle of Panipat 1556—Bairam Khan (Akbar’s General) defeated Hemu (the Hindu General and right-hand man of Mohd. Adil Shah). It also ended the Afghan Rule and Mughal Rule began instead.