Whereas the military leaders having gathered in Kyoto had mostly come from Hokuriku, Shinetsu, Tokai, and Kyushu provinces of Chikuzen, Bungo, and Buzen, the Eastern camp had a geographical advantage because not only members of the Hosokawa family were shugos in the provinces around the capital and in Shikoku but also shugos affiliated with the family were appointed in neighboring areas.
京都に集結した諸将は、北陸から信越、東海、九州の筑前、豊後、豊前が大半であったが、「東軍」には細川氏一族が畿内と四国の守護を務めていたことに加えその近隣地域にも自派の守護を配置していたため、地理的には優位を占めていた。