Regimental Colors (as for their usage in 19th Century US Army Units), were Flags that identified a particular Unit (both “Regular” and Volunteer). Standard in shape and design, they featured as all Blue Field. Set in the center of the Field, was a colored representation of an Eagle (crouching over the “Tools of War” - cannons, rifles, swords etc.). Surmounted by Gold Stars (to represent the States of The Union), 2 “Bannerolls” (top and bottom) were affixed. The Numerical identifier, State of Service and their “status” as Regular or Volunteer – was embroidered. Carried with The National Colors, they were normally made from silk. Some variations for color (Yellow for Cavalry and Red for Artillery) – were known to exist. In the early 20th Century, the color scheme and design was changed (allowing for their replacement with “Service Flags” and “Battalion Colors”.