Kenshin's vulnerability was exposed in the large-scale prolonged and protracted battles with both Daimyo families (feudal lord families) of Takeda and Hojo, although Kenshin was not defeated in direct confrontation, he finally lost lands in the Kanto region except for a part of Kozuke Province.
武田・北条両大名家と繰り広げた長期に渡る大規模な持久戦で露呈した脆さは致命的であり、直接の対陣での敗北は殆ど無いにも関わらず、関東においては最終的に上野の一部以外は殆ど失ってしまった。