The development of the tracked amphibian in the years immediately preceding World War II made the island-hopping campaigns of the Pacific War feasible. However, the development of guided missiles, tactical nuclear weapons, and mechanized divisions has made the traditional tactics of amphibious operations increasingly vulnerable.
Caldwell, Robert C.
"The Role of the Tracked Amphibian in Modern Amphibious Warfare,"
Naval War College Review: Vol. 23
, Article 9.
Available at: http://digital-commons.usnwc.edu/nwc-review/vol23/iss1/9