Okay--in 1941 Allied forces launched Operation Husky--the invasion of
Sicily.  It was planned during the Casablanca Conference earlier.  I
want to know why it was called Operation HUSKY.

This may be of interest:

"The names used for the Great Western Front Offensive of 1918 were
from religious, medieval, and mythical sources. The American military
got into the full swing of using code names for World War II by using
color coded war plans for names such as Operation Indigo - the
reinforcement of Iceland. But the full outbreak of World War II
changed the practice of using colors and the War Department used
10,000 common nouns and adjectives that were derived from an
unabridged dictionary with an adopted code word list. The British
already used such a publication.

As a result, the names would not disclose operational areas. While the
code names were randomly chosen, key World War II leaders, such as
Winston Churchill, were so fascinated with the art of naming
operations that he set forth directives on naming operations...

Due to operational security well-chosen nicknames were meaningless to
those not involved with the operation and frustrating for the enemy
trying to break the code name."

http://www.dix.army.mil/PAO/archive00/Features/june/exercises.htm