But even so, the long logistic support lines to South Vietnam have once again brought out the fact that the heavy lift mobility-without which no military effort-ancient or modern-can be sustained, must rely upon water transportation.
McDonald, David L.
"School of Naval Warfare: Broad-Shouldered Heavy Lift Mobility,"
Naval War College Review: Vol. 19
, Article 2.
Available at: http://digital-commons.usnwc.edu/nwc-review/vol19/iss3/2