7th » American Civil War: Union (American Civil War) Union forces defeat Confederate States of America Confederate troops at the Battle of Pea Ridge Pea Ridge in northwestern Arkansas.
8th » American Civil War: The iron-clad Ship CSS Virginia (formerly USS Merrimack 1855 6) is launched at Hampton Roads, Virginia.
9th » American Civil War: The USS Monitor and Ship CSS Virginia fight to a draw in the Battle of Hampton Roads, the first battle between two ironclad warships.
13th » American Civil War: The United States U.S. Federal government of the United States federal government forbids all Union (American Civil War) Union army officers from returning fugitive slaves, thus effectively annulling the Fugitive Slave Act of 1850 and
28th » American Civil War: Battle of Glorieta Pass in New Mexico, Union (American Civil War) called Union forces stop the Confederate States of America named Confederate invasion of New Mexico territory. The battle began on March 26.