 To sort out matters, he sent his eldest son to join other Dakota leaders in Washington D.C., where they conferred with the U.S. Secretary of War.Red Wing, meanwhile, joined other leaders and met with Great Britain's representative, and the Mdewakanton agreed to fight for the British.Tatanka Mani is believed to have led a unit of Dakota soldiers to Mackinac Island in Michigan, helping to gain a bloodless victory over the Americans there.