When did decoration day begin to include all fallen soldiers?

The Birthplace of Memorial Day and Early Observances 

The Civil War, which ended in the spring of 1865, claimed more lives than any conflict in U.S. history and required the establishment of the country’s first national cemeteries.

By the late 1860s, Americans in various towns and cities had begun holding springtime tributes to these countless fallen soldiers, decorating their graves with flowers and reciting prayers.

It is unclear where exactly this tradition originated; numerous different communities may have independently initiated the memorial gatherings.

And some records show that one of the earliest Memorial Day commemorations was organized by a group of formerly enslaved people in Charleston, South Carolina less than a month after the Confederacy surrendered in 1865.

Nevertheless, in 1966 the federal government declared Waterloo, New York, the official birthplace of Memorial Day.

Waterloo—which first celebrated the day on May 5, 1866—was chosen because it hosted an annual, community-wide event, during which businesses closed and residents decorated the graves

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