The Second Reconstruction Act of March 23, 1867 supplemented the First Reconstruction Act. The First Reconstruction Act left the Southern States in confusion to whose role it was to reinforce the legislation.The Second Act answered this problem. It established and clarified that the military commanders held responsibility to register voters and hold elections in their territories.he First Reconstruction Act left the Southern States in confusion to whose role it was to reinforce the legislation. The Second Act answered this problem. It established and clarified that the military commanders held responsibility to register voters and hold elections in their territories.