Some jinya had limited military functions such as Hekirichi Jinya of the Matsumae Domain (Kamiiso-cho, Hokkaido Prefecture) which had dorui and gun batteries in ryoho-shiki style (a style based on the fortification of Vauban in France).
稜堡式の土塁と砲台を構築した松前藩の戸切地陣屋（北海道上磯町）のように、限定的に軍事機能を持たせることもあった。