Can I include a copyright notice in my paper? Alright, so I'm kind of curious if it breaks any sort of standard style to put in a copyright notice somewhere at the start or end of my paper. The specific context I inquire for is coursework, not general release. Yes, I get that it would be pretentious, but this question is more just a curiosity than genuine applied inquiry.

So, for example, let's say I write a paper about the role of computer science in military tactics as my final paper for some class. I put on the title page "copyright 2016 &lt;my name here&gt;." Would this be in direct violation of MLA, APA, or Chicago style?

Then, extending the example, let's say I feel so proud of the paper that I'm contemplating giving it a general release on my blog. In that case would I still include the copyright notice on the copy I turn in?
Of the three listed I am only truly familiar with Chicago style, which if you are writing on military tactics is the style you are likely using, and that is the only style which has significant discussion of copyright notices. 

There is nothing against copyright notices in the Chicago style. In fact, the University of Chicago—the publisher the Chicago Style—requires a copyright notice in their dissertations. Notably, however, dissertations are formally published, in contrast with course papers.

That said, as pointed out in the comments, it is not necessary, since it is under copyright without a notice. It is pretentious and even a little insulting, since the unnecessary copyright notice implies that you think that A) your ideas are so good and B) that your readers/advisors/colleagues are of such a low moral character that might steal them but for this little notice you put on it. It is also well outside the norm for anything not formally published, and will look weird. 

The only exception to this would be if you are intending to distribute your work under a separate license, or if something you use in your paper is under a copyright or a license which requires a notification. For example, some of the Creative Commons licenses require notification if you use some of the licensed materials. It will still look a little strange, but people will understand, since it is legal stuff.