PYONGYANG, April 26 (Xinhua) -- Kim Jong Un, the top leader of the Democratic People's Republic of Korea (DPRK), supervised the largest ever combined firing drill by the Korean People's Army (KPA) marking its 85th founding anniversary on Tuesday, said official media Wednesday.

The Korean Central News Agency (KCNA) said the event took place on "the eastern front," without specifying the site of the drill.

Some media reports said it was held near Wonsan, a port city in eastern DPRK.

"After receiving the report on the plan for the combined fire demonstration of services of the KPA on the watch post, he gave an order to start the fire demonstration," said the KCNA report.

"Submarines rapidly submerged to make torpedo-attacks at the 'enemy' warships while fighters and bombers made zero feet flight above the sea to drop bombs on the targets," it said, adding that more than 300 large-caliber self-propelled guns lined up along the coast and "opened fire all at once."

Kim watched "the exciting scenery" and "praised the seamen of submarines and pilots for hitting targets every time," saying "the brave artillerymen mercilessly and satisfactorily hit the targets and the gunshots were very correct," the KCNA said.

Kim also said the KPA is a "matchless strong army equipped with latest attack means and they are fully displaying the might of the revolutionary party's army at the forefront in defending of the country and building of a prosperous country," according to the KCNA.

Tension remains very high between the DPRK and the United States over the latter's threat to stage military strikes against Pyongyang for its nuclear and missile programs.