Explained: From princes to President, the tradition of 21-gun salute at R-Day parade

The 21-gun salute at India's Republic Day parade is a tradition dating back to the British era, symbolizing the highest honor for the President and marking national celebrations. Originally performed with British-era 25-pounder guns, the salute now uses indigenous 105-mm Indian Field Guns to showcase Indian-made equipment. The 21-gun salute is synchronized with the national anthem and is also accorded to foreign heads of state and on special occasions like Army Day and Martyrs’ Day.