jul 21, 1969 - First man on the moon

Description:

During the US-backed Apollo 11 spaceflight, Neil Armstrong became the first man to walk on the moon, cementing a victory for the US in the Cold War.

The Cold War Concept that this event matches to is Proxy War. This is because it was an important Cold War "victory" for the US, in that they had beaten the USSR for the title of "First Man on the Moon".