This was the 47th launch of the Polar Satellite Launch Vehicle (PSLV).
PM Narendra Modi made the announcement in an address to the nation.
The successful tests were carried out in Pokhran, Rajasthan.
Army Chief General Bipin Rawat flew in the jet during the air show in Bengaluru.
The exercise will witness a wide array of aircraft and combat ground equipment.
It is being held in coordination with the Indian Coast Guard and other maritime stakeholders.
The LCH is capable of operating at altitudes as high as the Siachen Glacier.
The first of these frigates is expected to be delivered to the Indian Navy in 2026.
The 11-day-long joint military exercise will see joint planning and operations.
The first regiments of both these guns are expected to come up next year.