SEOUL, South Korea (AP) — North Korea held a military parade and rally on Kim Il Sung Square on Thursday, just one day before South Korea hosts the opening ceremony of the Pyeongchang Winter Olympics.

Kim Jong Un, dressed in a long black winter coat, was shown walking on a red carpet with his wife at the beginning of the event, which North Korea's state-run television broadcast hours after it was over. It began with thousands of goose-stepping troops lined up in Kim Il Sung Square to form words and slogans. Virtually all foreign media were excluded from the event.

North Korea had said it would hold a big event to mark the 70th anniversary of the founding of its military. Feb. 8 has been seen as a less important founding anniversary but made something of a comeback in 2015 and was elevated further this year in part because it is the 70th — a nice round number.

The Olympics probably were also a big factor.

Kim Jong Un has gone out of his way to make sure the North will hold attention throughout the games.

Following a last-minute proposal during Kim's annual New Year's address, North Korea is sending 22 athletes to compete and a delegation of more than 400 musicians, singers, martial artists and members of a cheering group to the games.

Kim is also dispatching his younger sister, Kim Yo Jong, to attend the opening ceremony. That in itself is a major development — she is one of his closest confidants, holds a senior party position and her trip would mark the first time any member of the ruling Kim family has visited the South since the Korean War. She will meet South Korean President Moon Jae-in at a luncheon, Moon's spokesman said Thursday.

The North's conciliatory moves related to the Olympics have generally been welcomed in the South. The parade, however, was seen as more sensitive.

Though possibly best known for their legions of goose-stepping troops, North Korean military parades are the country's primary means of showing off its most recent advances in military technology — sometimes with aspirational mock-ups.

The North unveiled five new kinds of missiles at its most recent major military parade last April.

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Talmadge, the AP's Pyongyang bureau chief, reported from Pyeongchang, South Korea. Follow him on Twitter and Instagram: @erictalmadge.