the island is named after the day of its recorded discovery, ascension day. it was an important safe haven and coaling station to mariners and for commercial airliners during the days of international air travel by flying boats. during world war ii it was an important naval and air station, especially providing antisubmarine warfare bases in the battle of the atlantic. ascension island was garrisoned by the british admiralty from 22 october 1815 to 1922.