Yes, as a lot of the units fighting in that were weren't regulars. A lot of state militias, private militias, etc. participated in the Civil War.
Subdued rank insignia in the US Armed Forces wasn't introduced until the Vietnam war.
Lieutenant Commander
The black leaf insignia is used for the Major rank in the Army. It is all for the Major rank in the Air Force and Marines.
Three chevrons, with the points facing down. See related link at the bottom. On their fatigue uniforms I saw them wearing in Afghanistan and Iraq, there would be a tab at the front of their blouse. The rank insignia would be embroidered on a loop, and this tab would be run through that loop. The actual rank insignia used by the Australians is more the same of those used by the British and other Commonwealth Dominion forces - there may be slight variations (such as the Canadian rank insignia, which has the rank of Master Corporal, and incorporates the Canadian maple leaf into the insignia), but the structure follows the British example, and the crown is an ever present feature on the insignia badges of certain ranks, military unit insignia, etc. (note: this only applies to the actual Commonwealth Dominions/Realms, who acknowledge the British monarch as head of state. Not all countries who are members of the Commonwealth of Nations are Commonwealth Dominions, and the crown is absent from their insignia).
For the US Army, it's a bronze oak leaf. The same insignia is used by Majors in the Air Force and Marine Corps, and by those holding the rank of Lieutenant Commander in the Navy and Coast Guard while wearing certain uniforms.
The correct spelling for the military rank is Sergeant.Sergeant is also used as a rank in most Police Forces around the world.The insignia badge is normally 3 stripes.
An emblem is a symbolic representation that signifies a particular idea or concept, often used to represent an organization or institution. An insignia is a symbol or token of authority, rank, or membership, typically displayed on uniforms, flags, or seals to denote an individual's or group's affiliation.
a system the Chinese used to tell what or who the person was For example: The Emperors symbol was the five toed dragon and the Empress's rank symbol was a Phoenix.
In the fire service, bugles are used as insignia to denote rank. An assistant fire chief is typically represented by two bugles.
The plural of insignia is insignias or insignia, but insignia is more commonly used as both singular and plural.
A fireman sent in the idea of the insignia to the owner, and initially he rejected it but the fireman died on his job and the owner used the insignia as a memorial.
The Ring of the Fisherman (papal ring) contains the insignia of the particular pope. It is used by the pope to impress his insignia on wax to seal important Vatican documents.