After a bombardment of Empress Augusta Bay 14 March, "Philip" left to take part in the Marianas campaign. From 17 June to the end of July, the destroyer's guns were in use almost daily against enemy positions on Saipan and Tinian. Known gun emplacements, troop concentrations, and air fields were the main targets, although several smaller engagements were performed at small craft in Tinian and boats in Tanapag Harbor.