Kim Jong-Un laughed as he watched armed forces display military power
The dictator said the hermit state was ready for war recently after it was threatened by US president Donald Trump.
The escalation of Pyongyang's nuclear programme in the country and the testing of missiles has caused global outrage.
It is believed North Korea has been attempting to master a missile which will hit US mainland.
The country has staged five atomic tests, two of them last year.
Now it is feared another operation will be launched to mark the 105th birthday anniversary of founder Kim Il-Sung on Saturday.
Kim Jong-Un with military leaders in Pyongyang
The North's state-run Korean Central News Agency (KCNA) said Kim watched over special forces as they dropped from light transport planes "like hail" and "mercilessly blew up enemy targets".
Apparently amazed by his country’s fighting prowess, Kim said "the bullets seemed to have their own eyes", KCNA reported.
It did not identify when the operation was held.
Photos of the event have emerged from the hermit state.
North Korea military show for leader Kim Jong-Un
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Soldiers for the North Korean army take part in airborne drills
President Trump has sent what he called a naval "armada" to the Korean peninsula and threatened to take on the nation if sanctions by China do not work.
In a press conference with the secretary of Nato, Trump warned the US “will not fail”.
Meanwhile, China has tried to end North Korean tensions by advising calmness and co-operation on each side.
The Rodong Sinmun, the ruling Workers' Party official newspaper published images of Kim watching troops parachuting down from jets.
Forbidden photographs depict the true North Korean army
Wed, April 12, 2017
While tourists are able to visit North Korea as part of a controlled tour group, they are asked by their handlers to never take photographs of soldiers. These pictures taken by photographer Eric Lafforgue show the reality of military service in the secretive state
ERIC LAFFORGUE/EXCLUSIVEPIX MEDI
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Soldiers enjoy a ride at the funfair in Pyongyang
Troops and their leaders waved and shouted and cheered on their leader as he passed them.
KCNA said: “The contest proved once again that our Korean People's Army… will show a real taste of gun shot and real taste of war to the reckless invaders."
Seoul and Washington are taking part in annual joint military drills, seen by the North as a practice for war.