Kim Jong Un supervised what North Korea says was its largest-ever live-fire military drill on Tuesday, in military exercises staged to mark the 85th foundation anniversary of the Korean People’s Army (KPA), the state-run Korean Central News Agency (KCNA) reported on Wednesday.

More than 300 large-caliber self-propelled guns were mobilized, state media said, as well as submarines armed with torpedoes and fighter jets.

“The combined fire demonstration of the Korean People’s Army (KPA) services in celebration of its 85th founding anniversary was staged on the largest-ever scale since the foundation of the armed forces,” KCNA reported in a Korean dispatch.