thumb|Korean soldiers and Chinese captives Commissioned by the new pro-Japanese Korean government to forcibly expel Chinese forces, on 25 July Major-General Ōshima Yoshimasa led a mixed brigade numbering about 4,000 on a rapid forced march from Seoul south toward Asan Bay to face Chinese troops garrisoned at Seonghwan Station east of Asan and Kongju.
thumb|Korean soldiers and Chinese captives Commissioned by the new pro-Japanese Korean government to forcibly expel Chinese forces on 25 July Major-General Ōshima Yoshimasa led a mixed brigade numbering about 4,000 on a rapid forced march from Seoul south toward Asan Bay to face Chinese troops garrisoned at Seonghwan Station east of Asan and Kongju.