American presidents have used the power to dismiss high-ranking officers as a means to assert policy and strategic control. Three examples include Abraham Lincoln's dismissal of George McClellan in the American Civil War when McClellan failed to pursue the Confederate Army of Northern Virginia following the Battle of Antietam, Harry S. Truman relieving Douglas MacArthur of command in the Korean War after MacArthur repeatedly contradicted the Truman administration's stated policies on the war's conduct, and Barack Obama's acceptance of Stanley McChrystal's resignation in the War in Afghanistan after a "Rolling Stone" article was published where he mocked several members of the Obama administration, including Vice President Joe Biden.