HARFORD CO, Md. — Formally known as the 6888th Central Postal Directory Battalion, Six Triple Eight was an all-Black women's Army Corps unit serving overseas in World War II.

WATCH: Last living descendant of the 'six triple eight', honors her mother's legacy Last living descendant of the 'six triple eight', honors her mother's legacy

Stationed in England and France, 855 Black women had one job — to sort massive mail backlogs for millions of American service members and civilians.

Despite facing racial discrimination, segregation and difficult working conditions, the Six Triple Eight cleared the backlog of around 17 million pieces of mail ahead of schedule.

"They were backlog they said for over two years or something and they got through it in a couple months," Tamala Mosby-Byrd said.

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