War parties launched a series of isolated raids in the mid-1780s, resulting in escalating bloodshed and mistrust. In April 1786, a militia from Vincennes attacked a village on the Embarras River, forcing Piankeshaw to move farther away and consolidate near the Vermilion River. Over 400 Piankeshaw and Wea returned with a war party in July, but were persuaded not to attack Vincennes. That Autumn, Generals George Rogers Clark and Benjamin Logan led a two-pronged force of Kentucky militia in punitive raids against Native American villages to the north of the Ohio River. Clark's force, considered the primary expedition, set off in September and marched north along the Wabash River to Illinois country. He was hindered by logistical problems caused by low water on the river, and when he reached the mouth of the Vermilion River in October, he was beset by mutiny and mass desertion. Clark returned with the remains of his force to Vincennes, his reputation in ruins.