Bragg's army besieged the city, threatening to starve the Union forces into surrender. The Confederates established themselves on Missionary Ridge and Lookout Mountain, both of which had excellent views of the city, the Tennessee River flowing north of the city, and the Union's supply lines. Bragg also had little inclination to take offensive action against the Federal army because he was occupied in leadership quarrels within his army. On September 29, Bragg relieved from command two of his subordinates who had disappointed him in the Chickamauga campaign: Maj. Gen. Thomas C. Hindman (who had failed to destroy part of the Union army at McLemore's Cove) and Lt. Gen. Leonidas Polk (who had delayed attacking on September 20 at Chickamauga). On October 4, twelve of his most senior generals sent a petition to Confederate President Jefferson Davis, demanding that Bragg be relieved of command. Davis personally visited Chattanooga to hear the complaints. After he decided to retain Bragg in command, Bragg retaliated against some of those generals by relieving Lt. Gen. D.H. Hill and Maj. Gen. Simon B. Buckner.