"Greetings to the valiant men and women of the Indian Army, to veterans and to families of those who have worn the uniform. You are our nation's pride, the sentinels of our liberty. Citizens sleep securely knowing you are ever awake and ever vigilant," the President tweeted.

The Prime Minister also took to twitter and hailed the soldiers for putting the nation first and said the country had unwavering trust and pride in the Army.

"Our Army always puts the nation first. I salute all those great individuals who sacrificed their lives while serving the nation. India will never forget our valiant heroes," Modi said.

"On Army Day, I convey greetings to the soldiers, veterans and their families. Every citizen has unwavering trust and pride in our Army, which protects the nation and is also at the forefront of humanitarian efforts during times of natural disasters and other accidents," he said.

The celebrations mark the day when Field Marshal K.M. Cariappa took charge as the first Indian Army chief in 1949, succeeding General Sir Francis Butcher, the last British Commander-in-Chief of India.