Government offices were often established or new parks or shrines were built at castle sites, and the Imperial Japanese Army was stationed at almost all the castle sites in the main cities.
城跡には引き続き役所が置かれたり、新たに公園や神社が設置されたことが多かったが、主要都市ではほぼすべての城跡に大日本帝国陸軍が駐屯した。