'One Nation Under God': The Story of How God Was Added to America's Pledge of Allegiance

'One Nation Under God': The Story of How God Was Added to America's Pledge of Allegiance Americans observed "Flag Day" on Sunday, June 14, marking the adoption of the official U.S. flag by the Continental Congress in 1777. That day is also special for another historic moment. On that day in 1954, President Dwight D. Eisenhower signed legislation adding the words "One nation under God" to the Pledge of Allegiance.