Dramatic footage reveals the US Army preparing an arsenal of formidable weapons, military land vehicles and helicopters in the lead up to the Korean War.
Scenes showing how intercontinental missiles of the type used for nuclear warfare were provocatively tested during the height of tensions between the US and China, then a staunch ally of communist Korea.
Other sections include a voiceover of a soldier reassuringly listing the many ways the US Army was prepared for a nuclear attack.
According to the narrator, this conflict was key in modernising US military might and shaping it into the force it later became.
He said: “We have built our army into a new, streamlined force; new in concept, new in mobility, new in powerful atomic weapons and other modern equipment.
“With a new dual capability, an army prepared to cope with the possibility of unlimited nuclear warfare, as well as with the more likely contingency of limited, local aggression.
“Korea was called many names – Brush Fire, Police Action and War.”
The video, The Big Picture – Brush Fire, was created by the US Department of Defence documenting the war which began in 1950.
Hundreds of thousands of US soldiers fought to prevent the takeover of South Korea by the communist regime.
The Korean War lasted for three years from June 25, 1950, to July 27, 1953.
And the newly-emerged footage comes as the fears grow of another conflict between the US and Pyongyang.
Donald Trump is thought to be considering military action against the hermit kingdom over its missiles programme.
Yesterday, the UN Security Council unanimously imposed new sanctions on North Korea, seeking to limit its access to refined petroleum products alongside crude oil and its earnings from workers abroad.
The UN resolution seeks to ban nearly 90 percent of refined petroleum exports to North Korea by capping them at 500,000 barrels a year.
It also demands the repatriation of North Koreans working abroad within 24 months.
And the US-drafted resolution caps crude oil supplies to North Korea at 4 million barrels a year and commits the Council to further reductions if it were to conduct another nuclear test or launch a missile.
North Korea on November 29 said it successfully tested a new ballistic missile that put the US mainland within range of its nuclear weapons.