Dee ihe na-aga n'ihu na paragraf a - Mgbalị ndị Union mere iji jiri ụgbọ agha USS "Monitor" na ụgbọ agha ndị ọzọ nke Union were Richmond site na mmiri n'oge Mgbasa Ozi nke Peninsula enweghị ike ịgafe ihe nchebe na ebe a n'oge Agha nke Drewry's Bluff
na May 15, 1862.