The battle continued for as long as 50 days after Tanabe-jo Castle was quickly besieged by a force of 15,000 soldiers of Sei-Gun, whose leaders included Shigekatsu ONOGI, a relative of Kiyoki SHIMA, Mitsunari ISHIDA's chief retainer, and Shigekatsu MAEDA, who was the son of Geni MAEDA, an important retainer of the Toyotomi family.
田辺城はすぐさま、石田三成の家老島清興の親族にあたる小野木重勝や豊臣家の重臣前田玄以の子前田茂勝が率いる西軍・1万5千人もの大軍で包囲されると、50日にも及ぶ長期戦となった。