Foot soldiers

...A lower-ranking position that accompanied the shogun on foot when he went out on a journey, and performed guard duties and various other tasks. Also called kachishu or kachihashiri, it is said to have originated from the foot soldiers of the Edo Shogunate. In the processions of the Kamakura Shogun when he went to Kyoto or went out on a journey, "kachishu" or "kachihashiri" were often seen, suggesting the presence of guard soldiers who accompanied the shogun on foot during the Kamakura period, but in the Muromachi period, it was established as a Shogunate office and its duties were also established.

*Some of the terminology that refers to "foot soldiers" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…将軍出行の際，徒歩で随行して，警固および諸雑用にあたる下級の職。徒士衆（かちしゆう），歩走（かちはしり）ともいい，江戸幕府における徒士組の起りといわれる。鎌倉将軍の上洛や出行などの供衆の行列の中に，しばしば〈歩走〉〈歩行衆〉とみえ，すでに鎌倉期の将軍出行に，徒歩で従う警固の士の存在がうかがわれるが，室町期になると幕府職制として成立し，職掌も定まった。…

※「徒士衆」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報