India

In India, the Army, Navy and Air Force celebrate their own Army Day (January 15), the Navy Day (December 4) and the IAF Day (October 8) respectively. But on Republic Day (January 26), all three services display their full colours and guard of honour.[citation needed]
Indian Air Force Day - The Indian Air Force Act came into force on 08 October 1932, that date being the date of its formal constitution. The IAF was a small group of six officer, nineteen airmen and four Wapiti aircraft. Now it is the fourth largest Aitrforce in the World after US, Russia and China. On 01 April 1933 first flight of the IAF the 'A' flight took off. IAF personnels consisted of five pilots and one equipment officer and 19 Havai Sepoys (air soldiers) and its aircraft was four Westland Wapiti IIA arm, which was in karachi(Pakistan). The Air Force first war was on 01 Oct 1937 in Wazirstan for Army Co-operation missions against Tribal. 'A' Flight flew 1400 operational hours.
Indian Navy Day - In India, 4th December is celebrated as Navy Day. On this day Indian Navy played a significant role in the bombing of Karachi harbor in the 1971 war i.e. Operation Trident which was launched on December 4. Owing to its success, the day of the attack has been celebrated as Navy Day since then.
Indian Republic Day - India became a Republic when the Constitution of the Country came into force on 26th January 1950, thereby defining it as a Sovereign Socialist Democratic Republic with a Parliamentary form of Government, through the Preamble. The Indian Constitution, which was adopted by the Constituent Assembly after considerable discussions represented the framework of the Government of the Country. Henceforth, 26th January has been recognized and celebrated as India’s Republic Day with great ardor, and is decreed a national holiday.