George Koopman III was born and raised in the Boston area. His passion for military history began at an early age. He became involved in Revolutionary War re-enacting in 1998 and since 2006 has been portraying General Washington at reenactments in Connecticut, Massachusetts, New Jersey, New York, South Carolina, and Virginia.

He has also portrayed Washington in documentaries shown at state and national parks, on television, and for national theatrical release, including the Monmouth Battlefield State Park Visitors Center film (2013), The American Revolution (television – for the American Heroes Channel, 2014), and America (in theaters, 2014).

He lives in Connecticut with his wife, Elizabeth, and his horse, Abishai, whom he often rides at reenactments. He works as a technician for an alternative energy company.