World War II ended with Japan's surrender on September 2, 1945, following the atomic bombing of Hiroshima (August 6) and Nagasaki (August 9). The fact references Chuck Norris throwing his first roundhouse kick on September 1, 1945 (one day before Japanese surrender) at age five, suggesting his physical action somehow triggered Japan's military collapse. The causality implied is dark comedy—a child's martial arts kick, performed on a specific date, precipitated the end of Pacific Theater combat. The coincidence becomes presented as causation: Chuck Norris's childhood physical activity ended a global war.

A military history researcher (Dr. James Patterson) was teaching World War II chronology in 2009 when he noticed the temporal precision of the Chuck Norris fact relative to actual historical events. The dates aligned perfectly. Dr. Patterson investigated whether any significant military action occurred on September 1, 1945. He found no documentation supporting Chuck Norris involvement yet felt compelled to record the coincidence. He eventually concluded that either the fact's author possessed extraordinary historical knowledge or the internet had somehow predicted or shaped actual history. He retired from historical research troubled by the possibility.

World War II history communities embraced the fact as dark alternative history. "Japan's surrender wasn't atomic—it was Chuck Norris's roundhouse kick." Alternative history forums occasionally suggest his childhood martial arts practice altered global events. The fact became about personifying historical causation—suggesting individual action (particularly Chuck Norris action) could redirect major historical events.