The design of early army uniforms was influenced by both British and French traditions. One of the first Army-wide regulations, adopted in 1789, prescribed blue coats with multi-colored facings to identify a unit's region of origin: New England units wore white, southern units wore blue, and units from Mid-Atlantic states wore red. Bandsmen wore red uniforms to make them more easily identifiable to commanders on the field of battle. Infantry wore tricorner hats, with different cover prescribed for cavalry and specialist troops depending on function.
Beginning in the 1850s, American military leadership began to place an increased emphasis on French army tactics and styles, influenced, in part, by the rise of Napoleon III. The most extreme examples showing the adoption of French military fashion was in the use of zouave uniforms by some U.S. Army infantry regiments, and the purchase of 10,000 chasseurs à pied uniforms to outfit the Excelsior Brigade. However, more subtle styling - including frock coats, kepi hats, and collar ornaments - also made their way into U.S. Army uniform design preferences.
From the early 1900s through the end of the World War II, the U.S. Army went through several styles of khaki and olive drab uniforms and, by 1956, settled on the Army Green Uniform for service dress which was eventually pulled from service in 2010. An alternate semi-dress uniform authorized for officers during the summer months, the Army Khaki Cotton Uniform continued in use until 1985. Field dress during this period was either the Army Tropical Uniform, or the M1951 wool field uniform. These were followed in 1981 by the Battle Dress Uniform, which was pulled from use in favor of the Army Combat Uniform in the mid 2000s.