Here are list of some of the big ticket announcements.
Defence Minister Rajnath Singh on Monday flew a sortie in a Light Combat Helicopter (LCH) after a fleet of the highly agile choppers was inducted into the Indian Air Force.
In a year bookended by intractable conflicts and geopolitical fragmentation, India focused on ramping up military prowess by broadly firming up defence procurement worth Rs 4.22 lakh crore even as Indian and Chinese militaries completed pulling back their troops from border face-off points in eastern Ladakh.
Over 68,000 Army soldiers, around 90 tanks and other weapon systems were airlifted by the Indian Air Force to eastern Ladakh from across the country for rapid deployment along the Line of Actual Control (LAC) after the deadly clashes in the Galwan Valley, top sources in defence and security establishment said.
The Indian Air Force's on Friday conducted day-night demonstration of its combat and fire power in Pokhran, which was witnessed by President Pranab Mukherjee and Prime Minister Narendra Modi.
The Defence Reasearch and Development Organsiation has, in an attempt to give India's lawmakers 'a first-hand account of huge work undertaken by the agency', begun rolling in weapon systems manufactured by it outside the Parliament.
"The target is 2022. It is absolutely on target. I mentioned earlier. Except for one or two aircraft, minor delays because of COVID related issues, but, in fact, some deliveries have been ahead of time. So, broadly, we are absolutely on target on the Rafale induction plan," he said.
Swedish defence major Saab has unveiled its next generation fighter aircraft, Gripen E, which the company said is being offered to the country under the 'Make in India' initiative with transfer of technology.
In a country that is often focused on the ways in which it falls short, the start of a year is a good time to remind oneself of such positives, observes T N Ninan.
A model of Rafale jet will be showcased as part of the IAF's tableau. Models of LCA Tejas, Light Combat Helicopter (LCH), surface-to-air guided weapon Aakash missile and Astra missiles will also be part of the tableau.
It's a bold marketing move for the locally-produced light combat aircraft.
The 'On-Board Oxygen Generation System' developed for the Tejas can produce 1,000 litres of oxygen every minute.
Operation Meghdoot was launched on April 13, 1984, when the Indian Army and IAF advanced to the Siachen Glacier to secure the heights dominating the northern Ladakh region
Around four lakh people who attended the event were treated to a spectacular flying display of fighter, civilian aircraft and helicopters.
Last week, Defence Minister Manohar Parrikar said buying 90 less Rafale fighter jets than the 126 planned earlier would save him money to buy more Tejas Light Combat Aircraft for the India Air Force.
Burned by the shooting down of a MiG-21 aircraft and the capture of its pilot after a dogfight over the India-Pakistan border in February 2019, CATS eliminates the need to send pilots into enemy air space.
In the current complex and dynamic strategic environment, refining the IAF's strategy, building robust capabilities and developing a flexible mindset to "prosecute future wars" will prove decisive, the chief of air staff said.
He was conferred with the Shaurya Chakra in August for averting a possible mid-air accident after his Tejas light combat aircraft suffered a major technical glitch last year.
The situation that developed in eastern Ladakh last year required acclimatisation of a large number of IAF personnel and stretching of equipment to limits, but the force is "much better prepared" now in case there is a "long haul", Chief of Air Staff Air Chief Marshal V R Chaudhari said on Thursday.
Shivangi Singh is part of the IAF's Golden Arrows squadron based out of Ambala in Punjab.
Armed with rockets and missiles, these helicopters can rain fire on the enemy in rarefied altitudes.
One of the most sought after exhibitions in Asia, as many as 549 companies are participating this year with 53 fighter aircraft on display.
In rebranding the F-16 into the F-21, Lockheed Martin appears to have accepted what many have warned it for years: That the IAF would never buy a fighter whose very name is associated across India with the Pakistan Air Force which has operated the F-16 since the 1980s.
'Whatever you work towards, be dedicated, do your best. Never go to bed thinking I could have put in more effort'
"It is my first sortie in Tejas, it is a good aircraft for induction into IAF operations," Raha was quoted as saying by the aircraft maker Hindustan Aeronautics Limited.
Boeing is likely to vie for the deal to supply 110 fighter jets to the IAF in one of the biggest such procurement in recent years globally which could be worth over USD 15 billion.
Among the programmes suffering from this lack of leadership is the Tejas Light Combat Aircraft project.
The cancellation of the project has far-reaching implications for the IAF, for which this was once its high-tech future fighter.
Indian Air Force on Friday raised its first squadron of the home-grown Light Combat Aircraft Tejas with the induction of two aircraft into the force at the Aircraft System Testing Establishment in Bengaluru.
In a projection of India's growing maritime prowess, Defence Minister Rajnath Singh on Monday addressed the top naval commanders onboard the country's first indigenous aircraft carrier INS Vikrant in the Arabian Sea and witnessed a mega wargame, amid China's increasing military posturing in the Indian Ocean region.
"Government has decided to appoint Air Marshal RKS Bhadauria, PVSM, AVSM, VM, ADC presently Vice Chief of Air Staff as the next Chief of the Air Staff," defence ministry's principal spokesperson, said on Twitter.
The Republic Day parade, which will begin at around 1030 am, will be a unique mix of the country's military prowess and cultural diversity, depicting the country's growing indigenous capabilities, Nari Shakti and emergence of a 'New India'.
Fighter jets and helicopters hit targets during day and night.
American armaments dominated the defence services's show of weaponry.
Naik said the prompt and effective deployment of the Navy in the time of crisis has underscored India's vision of being the "preferred security partner and first responder in our region".
The latest avatar of the F-15 is designed to deal with the world's most potent air threats that are emerging from China.
The indigenously developed light combat aircraft 'Tejas' would officially replace the MiG-21 FL fighter jet, Chief of Air Staff of the Indian Air Force, Air Chief Marshal N A K Browne said on Thursday.
It's a strategic approach in which the country's military and defence mechanisms evolve continuously in tandem with emerging threats. The new strategy anticipates events and prepares to counter those proactively.
Boeing expects the IAF to soon place an inquiry for twin-engine fighter jets to bridge a 200-aircraft gap in its armoury. And the Super Hornet is ready to fly in.
The ministry's year-end review is silent on the continued occupation by Chinese troops of territory that India has always claimed and patrolled.
