Main supply route
{{Short description|Military or humanitarian logistics passageway}}File:IFOR Hungarian Army truck.JPEG river at Slavonski Brod, Croatia.]]
File:Diamond Road 1993.jpg aid into central Bosnia in the winter of 1993.]]
A main supply route (MSR){{cite web|title=MOD Acronym List, p 258|url=https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/227048/acronyms_and_abbreviations_dec08.pdf|accessdate=5 July 2017}} is the route or routes designated within an area of operations upon which the bulk of traffic flows in support of military operationsAustralian Defence Force (1994). ADFP 101 Glossary. Staff Duties Series. Canberra: Defence Publishing Service. and humanitarian operations.{{cite book|last1=Underwood|first1=James R.|last2=Guth|first2=Peter L.|title=Military Geology in War and Peace|date=1998|publisher=Geological Society of America|isbn=9780813741130|pages=214–215|url=https://books.google.com/books?id=csilMhcixV8C&q=camp+redoubt+bosnia&pg=PA215|language=en}}{{cite book|last1=Shrader|first1=Charles R.|title=The Muslim-Croat Civil War in Central Bosnia: A Military History, 1992-1994|date=2003|publisher=Texas A&M University Press|isbn=9781585442614|page=19|url=https://books.google.com/books?id=1_ceXJTw71MC&q=route+diamond+bosnia&pg=PA19|accessdate=5 July 2017|language=en}} MSR is a term that is also used in insurgency and irregular war scenarios.{{cite news|title=Syrian rebels defeat Isis to capture main supply route to Turkey|url=https://www.independent.co.uk/news/world/middle-east/syrian-rebels-defeat-isis-to-take-control-of-main-supply-route-to-turkey-a6973181.html|accessdate=5 July 2017|work=The Independent|date=7 April 2016}}
Because of the intense and predictable flow of constrained military traffic MSRs can often become targets for opposing forces, as was the case with the Airport Road in Baghdad, a short but dangerous route.{{cite news|last1=Burns|first1=John F.|title=On Way to Baghdad Airport, Death Stalks Main Road|url=https://www.nytimes.com/2005/05/29/world/middleeast/on-way-to-baghdad-airport-death-stalks-main-road.html|accessdate=5 July 2017|work=The New York Times|date=29 May 2005}}