During the last weeks of World War II, warships of the United States Navy, the Royal Navy and the Royal New Zealand Navy bombarded industrial and military facilities in Japan. Most of these bombardments were conducted by battleships and cruisers, and caused heavy damage to several of the targeted factories, as well as nearby civilian areas. A major goal of the attacks was to provoke the Japanese military into committing some of its reserve force of aircraft into battle. However, the Japanese did not attempt to attack the Allied bombardment forces, and none of the involved warships suffered any damage.

Kamaishi is a city located on the Sanriku rias coast in Iwate Prefecture, Japan. As of 31 March 2020, the city had an estimated population of 32,609, and a population density of 74 persons per km2, in 16,230 households. The total area of the city is 441.43 square kilometres (170.44 sq mi)