The Battle of Olongapo was fought September 1823, 1899, during the PhilippineAmerican War. The battle featured both land and sea fighting, of which the objective was the destruction of the single Filipino artillery gun in Olongapo, a menace to American ships crossing the nearby sea.

The Asiatic Squadron was a squadron of United States Navy warships stationed in East Asia during the latter half of the 19th century. It was created in 1868 when the East India Squadron was disbanded. Vessels of the squadron were primarily involved in matters relating to American commerce with China and Japan, though it participated in several conflicts over 34 years of service until becoming the Asiatic Fleet in 1902.