"We are eternally indebted to our brave soldiers for their valour & determination in 1965 War," he tweeted.
Earlier in the day, he went to Amar Jawan Jyoti at India Gate here to pay his tributes to armed forces on a day to commemorate the victory and sacrifice of Indian soldiers in the India-Pak War of 1965.
The Prime Minister laid a wreath at Amar Jawan Jyoti and wrote a message in the Visitor's Book.