Martial Law- the law temporarily imposed upon an area by state or national military forces when civil authority has broken down or during wartime military operations.
Habeas Corpus-the right to trial before being jailed
Early on, northern soldiers thought they would be dying in a heroic way to "save the Union". However, twice as many soldiers died from disease than from bullets, bayonets, and cannons combined.
Grant's usage of total war ruined the south completely. As Union armies went through southern towns, they'd rip up railroads, burn houses and factories, and slaughter livestock.
"Total war" ruined the south's economy and ability to fight.
Farmers loathed the draft law in the south. Rich farmers with 20 slaves or more were not forced to serve in the war, which caused poor farmers to outrage.