With the secession of several states, Lincoln's Republicans enjoyed large majorities in both houses of Congress. War Democrats such as Andrew Johnson of Tennessee also provided support for many of Lincoln's policies, though Copperhead Democrats advocated peace with the Confederacy. From the start, it was clear that bipartisan support would be essential to success in the war effort, and any action, such as the appointment of generals, could alienate factions on both sides of the aisle. Lincoln appointed several political generals to curry favor with various groups, but especially Democrats. On its return in July 1861, Congress supported Lincoln's war proposals, providing appropriations for the expansion of the army to 500,000 men. Organizing the army would prove to be a challenge for Lincoln and the War Department, as many professional officers resisted civilian control, while many state militias sought to act autonomously. Knowing that success in the war required the support of local officials in mobilizing soldiers, Lincoln used patronage powers and personal diplomacy to ensure that Northern leaders remained devoted to the war effort.