The Lightweight Rucksack was the primary rucksack utilized by United States troops during the Vietnam War and also used in arctic and alpine areas. It replaced the M1952 rucksack (FSN 8465-261-6931) and was in turn replaced by the ALICE in 1973.
The Lightweight Rucksack served as the main pack for U.S. troops during the Vietnam War, as well as in harsh winter and mountainous conditions. It replaced the M1952 rucksack (FSN 8465-261-6931) and was later succeeded by the ALICE in 1973.