Yasukuni Jinja (靖国神社) is one of the most prestigious Shinto Shrine in Japan, adjoining the former Edo Castle in the north. It was a shrine presided over by the Imperial Army and Navy until the end of WWII and still preserves a shrine complex which survived the war up until now. For details about this shrine, see the article on Yasukuni Shrine.The Kusaji-shiki (草鹿式), held here in mid-October, is an archery ritual practiced in traditional outfit.

Kusaji-shiki

The Kusaji-shiki (草鹿式), held here in mid-October, is an archery ritual conducted in traditional samurai outfits on Health and Sports Day, which is a national holiday held on the second Monday of October.
This is an event dedicated for the Shuuki Reitaisai, or the Autumn Grand Festival, of the shrine which is held annually from 17th through 20th of the month.