Two Japanese naval forces, under the command of Admirals Nishimura and Shima, respectively, attempted to pass through the Surigao Strait. An American force, including several battleships damaged at Pearl Harbor, blocked their route at the northern end. US PT Boats and destroyers attacked the Japanese forces, causing considerable damage, while the capital ships maintained their position and struck those that managed to pass through the screen. Both Japanese forces ultimately turned back after sustaining losses.