By February 1965 , it was deployed as a mainstay battle force once the war was in full swing .
The 5th SFG was first deployed as a battlefield advisory group for the Army of the Republic of Vietnam ( ARVN ) .
By February 1965 , 5th SFG was deployed as a mainstay battle force once the war was in full swing .
The 5th SFG was first deployed as a battlefield advisory group for the Army of the Republic of Vietnam ( ARVN ) .