Kammala jumla mai zuwa: Eddy ya jagoranci Runduna ta 9 a farkon matakan Operation Overlord, sunan lambar don yakin Normandy, saukowa a Utah Beach kwana hudu bayan saukowar D-Day na Yuni 6, 1944. Domin rawar da ya taka a kama tashar jiragen ruwa na Faransa na Cherbourg, an ba Eddy lambar yabo mai daraja. A watan Agusta, ya zama kwamandan Janar na XII Corps, wanda sau da yawa shine jagorancin Janar Janar George S. Patton na Sojan Amurka na Uku. Eddy ya jagoranci XII Corps a cikin
Allied ci gaba daga Paris zuwa Rhine kuma a cikin fadace-fadace na gaba a Western Front. A lokacin yakin Bulge, Eddy ta XII Corps ya samu nasarar rike da kudancin kafada na Jamus salient. A watan Afrilu na 1945, bayan ya shiga cikin mamayewar Yammacin Yammacin Jamus, jim kadan kafin karshen yakin duniya na biyu a Turai, Eddy ya koma Amurka saboda rashin lafiya mai tsanani (matsanancin hawan jini, daga abin da ya warke) kuma ya maye gurbinsa a matsayin kwamandan XII Corps ta Major General Stafford LeRoy Irwin.