On 31 August, the day before the German invasion of Poland, Royal Sovereign was assigned to a screening force in the Greenland-Iceland-United Kingdom gap to patrol for German merchant ships that might be attempting to reach Germany
HMS Royal Sovereign enters harbour at Malta between the wars. The 'R' class battleships were never as highly regarded as the previous Queen Elizabeths, which were significantly faster, though both mounted 8 x guns.
USS Washington the only American battleship to sink an enemy battleship (IJN Kirishima) during World War II in a "one on one" combat - at night. This great warship is the second of North Carolina-class.