Battle of Mobile Bay
Aug 5 Battle of Mobile Bay, won by the Union Army led by Rear Admiral David Farragut with the cry "Damn the torpedoes, full speed ahead!" (US Civil War)
- Aug 5 Spectrum of a comet observed for 1st time, by Giovanni Donati
- Aug 6 Confederate forces evacuate Fort Powell in Mobile Bay, Alabama
- Aug 7 Battle of Moorefield, West Virginia
- Aug 8 Comet C/1864 N1 (Tempel) approaches within 0.0964 AUs of Earth
- Aug 8 Union troops/fleet occupy Fort Gaines, Alabama
- Aug 9 Siege of Fort Morgan, Alabama, by Union forces begins (Confederates surrender 23 August)
- Aug 13 Battle of Deep Bottom, Virginia (Strawberry Plains) & Fussell's Mill, Virginia
- Aug 14 -16] Confederate General Joe Wheeler besieges Dalton, Georgia
- Aug 14 2nd day of battle at Deep Bottom Run Virginia: Federal assault
- Aug 15 US Civil War: Off New England coast, CSS Tallahassee captures 6 Yankee schooners
- Aug 16 Federal assault on 4th day of battle at Deep Bottom Run, Virginia
- Aug 16 Palace for People's industry official opens in Amsterdam
- Aug 18 6th day of battle at Deep Bottom Run, Virginia: Confederate assault
- Aug 18 Battle of Petersburg: Battle of Weldon Railroad day 1 of a 3 day battle
- Aug 19 2nd day of battle at Globe Tavern, Virginia, Union forces attempt to destroy Weldon Railroad Confederate supply route (successful 21 Ausgust)
- Aug 20 8th/last day of battle at Deep Bottom Run Va (about 3,900 casualties)
- Aug 21 Battle at Globe Tavern, Virginia, ends after 2500 casualties
- Aug 21 Battle of Grubbs Crossroads, Kentucky
- Aug 21 Battle of Summit Point, Virginia
- Aug 21 Major General Nathan B. Forrest's assault on Memphis, Tennessee
First Geneva Convention
Aug 22 First Geneva Convention adopted in Geneva "for the Amelioration of the Condition of the Wounded in Armies in the Field" signed by 12 nations
- Aug 23 Union troops/fleet occupy Fort Morgan, Alabama
- Aug 25 Battle of Petersburg: Battle of Ream's Station
- Aug 25 Combination rail & ferry service available from San Francisco to Alameda
- Aug 29 British astronomer William Huggins discovers chemical composition of nebulae
- Aug 31 Atlanta Campaign: Battle of Jonesboro, Georgia, 1900 casualties
Admirals
Aviators
Gangsters
Generals
Industrialists
Suffragists