Before the Boshin War , Itoh had already relocated to Edo .
Before the Boshin War , Itoh had already had placed his naval skills at the service of the forces striving to overthrow the Tokugawa Shogunate .
Before the Boshin War , Itoh had already relocated to Edo and had placed his naval skills at the service of the forces striving to overthrow the Tokugawa Shogunate .