On April 3, 2014[1] it was announced that the club would compete in the American Soccer League (ASL) in 2014–15.

The Diplomats are owed by United Paradigm Group and the Executive Director is Tony Poarch.

The Diplomats 1st head coached was Philip Gordon, a native of Scotland and product of Hibernian F.C.

The club play their home matches at Marvin F. Wilson Stadium, which is part of the Prince George's Sports & Learning Complex.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.