Few cases can be found in history where the value of the sea as a logistic highway was so critical or the failure to recognize that fact so disastrous as in the example of the German campaign in southern Russia.
Marolda, Edward J.
"The Failure of German World War II Strategy in the Black Sea,"
Naval War College Review: Vol. 28
, Article 7.
Available at: http://digital-commons.usnwc.edu/nwc-review/vol28/iss4/7