Kinda sounds to me like you haven't gone in yet. Let me give you a little advice; don't spend a lot on a knife, at least not initially. Don't take a knife to Basic Training/OSUT, it will be taken away from you and you will likely not get it back. Also, know that young soldiers lose everything! The smaller and more expensive it is the greater the chance of loss. The main things you will use a knife for are cutting 550 cord (paracord), opening MRE's and scraping carbon off the back of the bolt on your rifle. For 20 years my main EDC knife was a 3-1/2" lightweight tactical folder that could fit all the way down in my front pocket and not bother me on a 12-mile foot march w/load. I carried many different knives that fit that description and they all worked fine except Gerbers which I always found difficult to sharpen in the field with my eze-lap diamond rod sharpener. Good luck and be safe!
Bob