When it comes to the military lexicon, there is a certain language that has many civilians thinking they're listening to a foreign tongue. Well, they are. Not "foreign" as in another nation's language, but foreign as in another culture. Although many military words and expressions do indeed have foreign language roots (the history and etymology…
di·gres·sion \ -ˈgre-shən \
1: the act or an instance of leaving the main subject in an extended written or verbal expression of thought : the act or an instance of digressing in a discourse or other usually organized literary work.
2: archaic : a going aside