The Satomi Sea Forces (5)

      In 1539, Satomi Yoshitaka (1507?-1574) attacked Ariyoshi Castle in Kazusa Province, which was on the Hojo Clan’s side.  In revenge, in 1540, the Hojo Clan started attacking the Satomi Clan’s stronghold domain, Awa Province, with the Izu Sea Forces.  Between 1541 and 1542, Yoshitaka had to move his headquarters from Inamura Castle in Awa Province to Kururi Castle in the inland-most center of Boso Peninsula in Kazusa Province.  Did he advance into another larger province?  Or did he have to retreat his defense line from the seashore?