| A | B |
| States' Rights | Theory that holds that the Constitution divided power, between the states and the federal government, and that a strict interpretation of that division be respected. |
| Guerrillas | Soldiers who use hit and run tactics. |
| Siege | Tactic in which an army is surrounded and starved in order to make it surrender |
| Battle of Bull Run | The first major battle between North and South |
| War of Attrition | A war in which one side inflicts continuous losses on the enemy in order to wear down its strength |
| Clara Barton | A nurse during the Civil War and established the American Red Cross |
| Pauline Cushman | A Union spy during the Civil War. |
| William T Sherman | Became General-in-Chief of the U.S. Army, burnt Atlanta and marched to sea creating a path of destruction. |
| John Wilkes Booth | The person who assassinated Abraham Lincoln |
| George McClellan | Union general at the beginning of the Civil War. Also ran in the presidential election in 1864 as the democratic candidate. |
| Writ of Habeas Corpus | A legal protection requiring that a court determine if a person is lawfully imprisoned. |
| Pickett's Charge | A Confederate infantry assault during the Battle of Gettysburg, historically noted for being a major defeat |
| Robert Smalls | A born slave, turned out to be pilot of a Union ship |
| 54th Massasschusetts | The first volunteer black regiment that fought in the Civil War. |
| Battle of Shiloh | A battle fought in Tennessee that broke the Confederate line and allowed the Union to march towards the Mississippi. |