Operation Interflex, the UK-led multinational training program for Ukrainian troops, is evolving to encompass a new range of specialist disciplines including aviation, medical, engineering and logistics, as well as helicopter instructor training.Now in its fifth year, the program has delivered basic infantry and leadership training at pace and scale, enabling Ukrainians with little or no prior military experience to defend their country against Russia’s unprovoked full-scale invasion. In addition, the program has delivered bespoke mental resilience training to 375 Ukrainian combat psychologists since 2024.JOIN US ON TELEGRAMFollow our coverage of the war on the @Kyivpost_official.The new phase of training, announced in a press release by the UK Ministry of Defence, will respond to the changing requirements of the Armed Forces of Ukraine (AFU), with a shift away from large‑scale infantry training and towards specialist and advanced training designed to build long-term capability.The program’s first four years have garnered international recognition, having established support from 13 partner nations. Acting as a boost to Ukraine’s own training system, more than 63,000 Ukrainian personnel have completed infantry courses, including 11,000 trained as military instructors.The program launched in 2022 and was extended last year to at least the end of 2026. In its first four years, its offering has grown from a five-week basic course for recruits to a seven-week program for more experienced troops.