Major-General​ ​George​ ​Meade​ ​adopted​ ​this​ ​flag​ ​for​ ​the​ ​Army​ ​of​ ​the​ ​Potomac​ ​Headquarters.​ ​It​ ​was​ ​a swallow-tailed​ ​guidon​ ​featuring​ ​no​ ​stripes,​ ​but​ ​with​ ​a​ ​golden​ ​colored​ ​eagle​ ​set​ ​within​ ​a​ ​silver​ ​wreath centered​ ​on​ ​a​ ​plain​ ​magenta​ ​field. Considered by many re-enactors and Civil War historians to be the battle flag of the Union Army.