the shonai domain fought a defensive war afterwards and protected most of its own territory , but on november 8 , partly due to the defection of allied domains from the alliance , the domain surrendered its castle . その後は防衛戦を行い、ほぼ領土を守っていたものの、他の同盟藩が脱落したこともあり9月24日に開城し恭順した。
at the battle of sekigahara , he joined the battle of gifu-jo castle , the sone defensive war , and the battle of ogaki-jo castle , and was given kariya city that was worth 30 ,000 koku (approximately 1 .8 million liters of crop yield ) in addition to his territory . 関ヶ原の戦いでは岐阜城攻め、曾根防衛、大垣城攻めに加わり、刈谷市3万石を安堵された。
in the late medieval period , as the nation became unsettled , kosen bosen (offensive and defensive war ) broke out frequently to resolve disputes over the boundaries of territories or the like by force (self-help ) instead of by bringing them into court . 中世後半になると、社会が不安定となり、境相論などを訴訟によらず実力によって解決（自力救済）しようとする故戦防戦が頻発するようになる。
the akita domain , together with the samurai warriors of the saga domain deployed as reinforcements , fought a defensive war , but fell behind; the shonai domain in particular advanced deep into the akita domain and even captured subsidiary castles of kubota castle; the akita domain , however , prevailed due to the arrival of reinforcements from the new government ' s forces , and launched a counterattack . 援軍として派遣されていた佐賀藩兵と共同で防衛戦を行うも劣勢で、特に庄内藩には領内深くまで攻め込まれ久保田城の支城までが落とされたが、新政府軍の増援が来着したことで優勢となり反撃を行った。
