Question: when was the ho chi minh trail used
Answer: Hồ Chí Minh Trail Southeastern Laos Ho Chi Minh Trail , 1967 Type Logistical system Site information Controlled by National Liberation Front Site history Built 1959 -- 1975 In use 1959 -- 1975 Battles / wars Operation Barrel Roll Operation Steel Tiger Operation Tiger Hound Operation Commando Hunt Cambodian Incursion Operation Lam Son 719 Ho Chi Minh Campaign Operation Left Jab Operation Honorable Dragon Operation Diamond Arrow Project Copper Operation Phiboonpol Operation Sayasila Operation Bedrock Operation Thao La Operation Black Lion Garrison information Past commanders Võ Bẩm Phan Trọng Tuệ Đồng Sỹ Nguyên Hoàng Thế Thiện Garrison 5,000 -- 60,000