National Highway 9 (Vietnam)

National Highway 19', in Vietnam, runs westward from the seaport of Qui Nhon, thorough the Central Highlands to Pleiku,

Along the highway is Mang Yang Pass, where an elite French force, Groupe Mobile 100 (GM 100) was destroyed in 1954.

It goes through An Khe, which was the headquarters for the U.S. 1st Cavalry Division (airmobile); see the Battle of the Ia Drang.