It was the measure of genius of President Lincoln not only that he won his war but that he did so by drawing upon and synthesizing the strengths of anti-slavery, free soil, democracy, and nationalism. The Confederacy abandoned all party activity, and thereby forfeited the advantages of a nationwide organization committed to support of the administration. In the Union, the Republican Party unanimously supported the war effort, finding officers, enlisted men, enlistment bonuses, aid to wives and widows, war supplies, bond purchases, and the enthusiasm that was critical to victory. The Democrats at first supported a war for Union, and in 1861 many Democratic politicians became colonels and generals. Announced by Lincoln in September 1862, the Emancipation Proclamation was designed primarily to destroy the economic base of the 'Slave Power'. It initially alienated many northern Democrats and even moderate Republicans. They were reluctant to support a war for the benefit of what they considered an inferior race. The Democrats made significant gains in the 1862 midterm elections, but the Republicans remained in control with the support of the Unionist Party. Success on the battlefield (especially the fall of Atlanta) significantly bolstered the Republicans in the election of 1864. The Democrats attempted to capitalize on negative reactions to the Emancipation, but by 1864 these had faded somewhat due to its success in undermining the South. Additionally, the Republicans made charges of treason against 'Copperheads' a successful campaign issue. Increasingly the Union Army became Republican in its makeup; probably a majority of Democrats who enlisted marched home Republican, including such key leaders as John Logan and Ben Butler.