Passage: After the 1965 war, the IAF underwent a series of changes to improve its capabilities. In 1966, the Para Commandos regiment was created. To increase its logistics supply and rescue operations ability, the IAF inducted 72 HS 748s which were built by Hindustan Aeronautics Limited (HAL) under license from Avro. India started to put more stress on indigenous manufacture of fighter aircraft. As a result, HAL HF-24 Marut, designed by the famed German aerospace engineer Kurt Tank, were inducted into the air force. HAL also started developing an improved version of the Folland Gnat, known as HAL Ajeet. At the same time, the IAF also started inducting Mach 2 capable Soviet MiG-21 and Sukhoi Su-7 fighters.

Question: What did the IAF go under after the 1965 war?
a series of changes to improve its capabilities