Treatise on Military Preparedness, Volume 90

Regional surveys and military strategies concerning the barbarian tribesoriginal: "Yilu buluo" (夷虜部落). This historical term was used by Ming officials to describe the northern nomadic groups, such as the Mongols and later the Jurchens, who posed a constant threat to the frontier. are placed at the head of these maps to facilitate the study of recent events.

Ji Garrison

Ji Zhen (薊鎮): Also known as the Jizhou Garrison, this was one of the "Nine Garrisons" of the Ming Dynasty. It was arguably the most important military district as it guarded the mountain passes directly north and east of Beijing.

Jizhou

Changping

Baoding

Miyun

Yongping

Yizhou