World War 1 was the first war when this was used on rank insignias although the exact date I couldent name
The rank of Sargeant has the insignia of three downward-pointing chevrons.
Chevrons are like army stripes on a sleeve.
Three
The Marines are Marines. The Army has Army Special Forces AKA Green Berets.
At that time, the U.S. Army retained a total of three distinctive NCO chevrons.
Army by far. Marines are real men.
Chevrons denote a non-commissioned officer.
The Royal Marines are part of the Royal Navy and nothing to do with the Army.
Always. And the Army often come in to help the Marines.
The Army. The Marines typically fought in the South Pacific.
Army
Marines