Jinmaku

Jinmaku (陣幕) is a curtain used in setting up a military encampment commonly seen from the pre-modern era in Japan.

In ancient Japan jinmaku were tied to poles and stretched around field encampments to form a defensive barrier.

Soldiers in the Konjaku Monogatarishū slept in an area surrounded by jinmaku to provide protection while sleeping.

[2] Illustrations on the Mongol invasion in the Zenkunen kassen emaki depict the appearance of clan mon emblems on jinmaku in the 13th century.

[4] In the Edo period military science became popular among samurai and gave religious meaning to jinmaku as a sacred item.