North Korean citizens took to the streets to observe a comprehensive on Tuesday, according to media reports, as the country celebrated 85 years since the foundation of its military.
The country's 'Army Day', marked as a public holiday in Pyongyang, was observed by North Korean citizens despite one of the U.S.'s arriving in South Korea on the same day.
The missile-armed USS Michigan docked in South Korea on the anniversary of the Korean People's Army amid rising tensions and increasingly heated rhetoric between Washington and Pyongyang.
North Korea's leader King Jong-un was thought to have taken part in the drill which took place near the eastern port city of Wonsan, according to South Korea's Yonhap news agency. Yonhap estimated between 300 and 400 artillery pieces were used in the live-fire drill.
North Korea's state media appeared to adopt a defiant tone as it suggested its military would be prepared "to bring to closure the history of U.S. scheming and nuclear blackmail."
North Korean soldiers walk in front of bronze statues of deceased founder Kim Il-sung and the late leader Kim Jong-Il.
Crowds in North Korea's capital laid flowers to pay respect to giant statues of the country's former leaders on Tuesday.
North Korean officials held a meeting on Monday to celebrate the anniversary of the Korean People's Army and declared the country would be primed and ready to respond to U.S. military action.
Yonhap news agency suggested North Korea's Army Day had featured one of the country's largest ever artillery drills.
Pyongyang has urged Washington to choose between political and military surrender following escalating tensions between the two nations.
Tuesday's live-fire drill followed Trump's criticism of North Korea in which he lamented the "continued belligerence" of the country in a telephone conversation with Chinese President Xi Jinping.
The USS Michigan, a missile-armed US navy submarine, arrived in South Korea on Tuesday.
North Korea's growing nuclear and missile threat could represent the most significant security challenge to U.S. President .