Why are some guys so vulgar in the army but so polite outside?

The last time I had a substantially long break which I really appreciated was in November 2004. 8 weeks of relaxation, to be precise. 1 week was spent in london and paris on a school trip, the details of the remaining weeks I can't really recall. I just have the impression of me waking up refreshed on cool, lazy mornings; me taking swims either alone or with friends every now and then; me having alot of dinners outside. Whatever it is, it was good.

The next substantially long break Im going to have comes in November 2007, and I would like to take this opportunity to express my deep hatred and overwhelming disgust with the army for wasting all my time spent-- 22 months at the end of it all, to be exact-- doing senseless things in a senseless manner, forcing me to learn new skills such as driving a land rover, as well as attempting to embed such idiotic values in me such as leadership and loyalty to the country. Rubbish lah hor, I think going for a swim is better.