Shijo-mo (branch castle network) refers to a defense or governing network of castles, forts and fortifications called branch castles (shijo, edajiro, hajiro) performing a support function and scattered around a main castle which is the stronghold or base in each region developed mainly in the Sengoku Period (Japan).
支城網（しじょうもう）とは日本の主に戦国時代(日本)に発達した、各地域の拠点や本拠となる本城と、それを守るように周囲に補助的役割の支城・枝城・端城などと呼ばれる城・砦・陣屋群を張り巡らせた防衛及び統治ネットワークを指す。