| Date | Event |
|---|---|
| May 05 1864 | The Wilderness Campaign Was In Virginia |
| May 07 1864 | Army Under Ulysses S. Grant Moves Southward |
| May 07 1864 | Oldest Clipper Ship Launched In Sunderland |
| May 09 1864 | Second War Of Schleswig: Danish Win |
| May 10 1864 | Massive Union Assault At Spotsylvania |
| May 12 1864 | Thousands Die In 'the Bloody Angle' |
| May 13 1864 | Battle Leads General Sherman Toward Atlanta |
| May 15 1864 | Battle Of Resaca In Georgia Ends |
| May 15 1864 | Officer Cadets Help Confederates At New Market, VA |
| May 20 1864 | Confederate Victory At Ware Bottom Church |
| May 21 1864 | Russian Declares End To Russian-Circassian War |
| May 21 1864 | Battle Of Spotsylvania Court House Ends |
| May 22 1864 | The Union's Red River Campaign Was A Failure |
| May 26 1864 | Montana Is Organized United States Territory |
| May 29 1864 | Emperor Maximilian I Arrives In Mexico |
| May 31 1864 | Civil War Results Cold Harbor Battle |