provoked consternation in Winter Games host South Korea, coming just days after the unpredictable, nuclear-armed North agreed to participate in Pyeongchang following months of cajoling by Seoul to join in a "peace Olympics".
The latest satellite imagery, taken Monday, showed 13,000 troops rehearsing at an training facility on the outskirts of Pyongyang, but with only a few artillery pieces and armoured vehicles, according to respected US website 38 North.
"The North last year declared itself as a nuclear state," said Park Won-Gon, international relations professor at Handong Global University.
"They want to 'normalise' its military rise and its status as a de-facto nuclear state by holding the parade and attending the Olympics a day later as if nothing happened and there is nothing wrong about it," he told AFP.
Such plans are likely to backfire.
The North's participation in the Games has been hailed by Seoul and the IOC but is seen with suspicion by critics who describe it as an attempt to soften Pyongyang's image and to eventually ease sanctions on the regime without it giving up its nuclear ambitions.
Washington has said it would "prefer" the parade not take place on Thursday, and US political website Axios quoted an aide to US Vice President Mike Pence -- who will attend the Pyeongchang opening ceremony -- calling the North's participation "propaganda".
"Everything the North Koreans do at the Olympics is a charade to cover up the fact that they are the most tyrannical and oppressive regime on the planet," the aide said.
The Kim regime -- which has ruled the isolated, impoverished nation for decades with an iron fist and pervasive personality cult -- has proven adept at grabbing global attention for political purposes.
Pyongyang has often test-fired missiles or threatened to do so ahead of visits by high-profile diplomatic figures to Seoul, or around presidential elections or inaugurations in South Korea or the US.
North Korean military parades typically feature thousands of goose-stepping troops who make the ground shake as they pass through Kim Il Sung Square, rolling tanks and increasingly heavy weaponry, culminating most recently in April with intercontinental ballistic missiles (ICBMs) -- or at least their casings.
They are the highlight for Pyongyang-watchers, who examine them closely for clues about the sources and progress of its technology.
The displays take place before an audience of tens of thousands of citizens, with leader Kim Jong-Un and the rest of the North Korean leadership looking on from a viewing platform.
Pyongyang normally invites in hundreds of foreign journalists to show off the spectacle to the world -- although it has not done so on this occasion.
Kim appears to be seeking to rally support from his people by showcasing and portraying the North's military might as something to match the achievements of its richer southern neighbour, said Cheong Seong-Chang, analyst at the Sejong Institute think tank.
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