 On the mainland across the narrow channel from Ganghwa Island, however, the French offensive was met with stiff resistance from the troops of General Yi Yong-Hui, to whom Roze sent several letters asking for reparation, without success.A major blow to the French expedition came on 26 October, when 120 French Naval Fusiliers landed briefly on the Korean mainland in an attempt to seize a small fortification at Munsusansong, or Mt.Munsu Fort (depicted in the illustration above).