Some retainers of the former Shogunate, who were opposed to the bloodless surrender of Edo Castle on May 3, 1868, fled towards Chiba Prefecture and set up a camp in Funabashi Daijingu, and on May 24, they clashed with the new government's forces around the area of Ichikawa City, Kamagaya City, and Funabashi City.
慶応4年（1868年）4月11日に行われた江戸城無血開城に従わぬ旧幕臣の一部が千葉県方面に逃亡、船橋大神宮に陣をはり、4月3日(旧暦)（5月24日）に市川市・鎌ヶ谷市・船橋市周辺で両軍は衝突した。