Although the city of Aomori lacked major targets of military significance and was a minor city in terms of population, it was a prefectural capital and a major regional transportation hub. Aomori Station was the northern terminus for the Tōhoku Main Line and Ōu Main Line railways, and Aomori Port was the primary base for the Seikan Ferry connecting Honshu with Hokkaidō. In terms of military industry, the city had a factory owned by Toyo Seikan, which manufactured wings and landing gear for aircraft.