Johnson returned to his seat in Congress in the late fall of 1812. Based on his experience, he proposed a plan to defeat the mobile, guerrilla warfare of the Indians. American troops moved slowly, dependent on a supply line. Indians would evade battle and raid supplies until the American forces withdrew or were overrun. Mounted riflemen could move quickly, carry their own supplies, and live off the woods. If they attacked Indian villages in winter, the Indians would be compelled to stand and fight for the supplies they used to wage war and could be decisively defeated. Johnson submitted this plan to President James Madison and Secretary of War John Armstrong, who approved it in principle. They referred the plan to Harrison, who found winter operations impracticable. Johnson was permitted to try the tactics in the summer of 1813; later, the US conducted Indian wars in winter with his strategy.