Rangers (Army of the Republic of Viet Nam)

Rangers of the Army of the Republic of Viet Nam, referred to several types of units, all select or elite light infantry, but varying over time. In 1965, there were three types:
 * ARVN Special Forces Luc Luong Dac Biet
 * ARVN Rangers Biet Dong Quan (BDQ)
 * ARVN Special Forces Rangers Biet Cach Du (BCD), the 91st Special Forces Ranger Battalion

After United States Army Special Forces units withdrew from the Vietnam War, the LLDB and BDQ were combined into the Biet Dong Quan Bien Phong Border Guard Rangers.

BCD went into strategic reserve, and were key elements in the Battle of An Loc in 1972 and the Battle of Phuoc Long in 1974.