The redeemers were the southern wing of the Bourbon Democrats, the conservative, pro-business faction in the Democratic Party, who pursued a policy of Redemption, seeking to oust the Radical Republicans a coalition of freedom, "carpetbaggers", and "scalawags" (poorer non-slaving whites).
A couple of weeks before the Battle of New Orleans, the U.S. and British governments had negotiated and signed a peace treaty that put an effective end to the war between the two countries. Given that news from Europe took about a month to reach the U.S., both the U.S. soldiers led by General Andrew Jackson and the Red Coats led by General Sir Edward Pakenham was a pointless confrontation. A few weeks after the resounding U.S. victory (only 13 men were killed on the U.S. side and 285 on the British side), Jackson and his men got news of the peace treaty signed before their feat of arms.
