Public domain
Gunsho Ruijū, Volume 384, Upper, Middle, and Lower (Warfare Section 16)
From the collection of National Diet Library, Japan. Free to download, adapt and use — no permission needed.
Credit line群書類従 巻第384上・中・下(合戦部16). [18--] [写]. 塙, 保己一, 1746-1821. National Diet Library, Japan. Public domain.