sentences:  This group planned the Battle of Normandy, codenamed "Operation Overlord", also known as D-Day, which liberated Occupied France.He served as the Deputy Chief of Staff of the European Theater from 1943–1944, and Deputy Chief of Staff for Supreme Headquarters Allied Expeditionary Force.Ray Barker was born in Elmira, New York and enlisted in the Army first serving with the 15th Cavalry from 1910 to 1913.