Expansion of Government Power During the Civil War and Reconstruction Contrary to what I believed in the past, the United States federal government retained and expanded their power and authority during the years of the Civil war along with the period of Reconstruction. Through drafts and monitored elections, they exercised this power during the Civil War. Then, as Reconstruction began, they initiated other methods of increasing their authority over the citizens. Military was placed in Southern states, by the federal government, in order to keep control over the rebellious people. Not only that, but, the idea of putting the federal government in charge of Reconstruction and