How should I get my hair done for where I'm about to be headed?

Well, the length of my hair right now is a bit under my shoulders by a few inches. Since it is layered, it is extremely difficult to tie my hair up in a low tight bun! And well, the thing is, I will NEED to be able to tie it in a low, secure, tight bun for when I go for my Basic Military Qualification this summer. Anyways, my hair keeps falling out of it, and it is fairy uncomfortable. I figure I will take the other option and just cut my hair to the longest length I am allowed to for a female. That way I will not need to tie it up.

Soo, I will cut my hair short for this summer at BMQ, just so I’ll have an easier time getting ready and doing stuff. Does anybody have any suggestions for what a nice cut about shoulder or chin length would be? Hopefully a hairstyle that doesn’t get into my face as well. Something that will grow out nicely, and with not too many layers (so when my hair is grown out long again, I will be able to tie it in a low bun without little hairs sticking out). Oh yes, and a style that is easy to handle, and will look nice even if nothing is done to it, for I figure I’ll have no time to do anything to my hair everyday before training.

I was thinking maybe a bob with bangs, the bangs have to be above eyes so that we are able to see when crawling and such.

If I get any comments, opinions, suggestions, it is much appreciated!