The United States has a longstanding practice dating back to the end of World War I of playing the national anthem before to sporting events. The custom, which was first observed as a potent symbol of unity and patriotism, started to catch on, especially during baseball games. Bringing tens of thousands of people together beneath the American flag, bound by a common sense of pride in their country, was a straightforward but powerful idea.

The Early Years of the Anthem: World War I and Later
After World War I, performing the national anthem at public gatherings did not quickly spread as a common practice. But it did act as a powerful symbol of unification at a time when the country was recovering from the destruction of the war. Even if the national anthem was not played at every event, it was felt, particularly during sizable get-togethers where patriotism was evident.

A Comeback In the course of World War II
During World War II, the custom of playing the national song acquired considerable momentum. The song gained even more significance in public life during a period when the nation was embroiled in strife once more. It was played prior to movies, plays, and other public events in addition to athletic events. The national anthem acted as a poignant reminder of the collective sacrifices made by Americans, both domestically and abroad.

Strengthening the Custom: The Vietnam War Period
The national anthem was always played at sporting events by the time the Vietnam War broke out, especially in baseball—often referred to as America’s pastime. The national anthem served as a unifying factor that brought the American people together throughout a difficult and complex period of time, in spite of the controversy and divide surrounding the Vietnam War. It became into a custom, a time for introspection and deference prior to the thrilling game.