When Atkinson arrived at Fort Armstrong on Rock Island on April 12, he learned that the British Band was in Illinois, and that most of the Meskwakis he wanted to arrest were now with the band. Like other American officials, Atkinson was convinced that the British Band intended to start a war. Because he had few troops at his disposal, Atkinson hoped to get support from the Illinois state militia. He wrote to Governor Reynolds on April 13, describing—and perhaps purposely exaggerating—the threat that the British Band posed. Reynolds, who was eager for a war to drive the Indians out of the state, responded as Atkinson had hoped: he called for militia volunteers to assemble at Beardstown by April 22 to begin a thirty-day enlistment. The 2,100 men who volunteered were organized into a brigade of five regiments under Brigadier General Samuel Whiteside. Among the militiamen was 23-year-old Abraham Lincoln, who was elected captain of his company.