In 1904 PD, the Invincible was under the command of Captain Marguerite Daumier. The Invincible was the current holder of the Queen's Cup. The Invincible served in Battlecruiser Squadron 5. In 1905 PD, the ship became the Admiral Mark Sarnow's temporary flagship during a gunnery exercise. Captain Honor Harrington visited the ship during the exercise. The Invincible fought at the First Battle of Hancock.