The isolated country, in previous military parades, had displayed newly-developed weapons such as missiles to show off its military might, the Yonhap news agency reported.
South Korean Unification Minister Cho Myoung-gyon earlier had claimed that North Korea might hold a "threatening" military parade by mobilizing a huge number of military personnel and nuclear weapons.
However, Pyongyang had brushed off Seoul's claims, saying that nobody had the right to point out at its military anniversary celebrations.
However, in 1978, late North Korean leader Kim Il-sung changed the date to April 25 when the isolated nation created anti-Japanese guerrilla forces in 1932.
The two Koreas have engaged in sports diplomacy since North Korean leader Kim Jong-un extended a rare olive branch to Seoul in his New Year's message, after years of tensions sparked by the Pyongyang's nuclear and missile provocations.
The North announced on Sunday that its ceremonial leader Kim Yong-nam will be arriving at Pyeongchang for attending the Winter Olympics and will head a 22-member delegation, which included three delegates and 18 supportive staffers.
North Korea will send 24 officials, including coaches, alongside the 22 athletes in three sports and five disciplines.
The Winter Games will take place from February 9 to 25. The Pyeongchang Winter Paralympics will be held between March 8 to 18.
The development between the two countries has brought some ease into their strained relations. (ANI)