Slomo...sorry, but I choose not to say what I am doing, as there are not many jobs like it, and I like having a little bit of anonymity.
1st thing...do you have a skill? Not just your military training, but an actual skill that you can sell yourself with? I had many jobs before the military, and combining those jobs with my military training, I was able to market myself.
2nd thing...be willing to take the lowest job possible. I took an entry level job to get myself in the system, then I parlayed that into something bigger.
3rd thing...remember that you are at the bottom of the hiring agenda. Military spouses with SOFA status are ranked higher than you even if you are more qualified. I know that system sucks, but it is like that for the sake of providing jobs for the spouses who left jobs behind in the US and followed the service members to their assignments. If you have the right qualifications though, someone will eventually see that and pick you up.
Apply for anything and everything...but ensure that you are truly qualified. Don't just apply because you say "I can do that!". If you really don't have the qualifications, you won't make it past the screening process.
Search online for the Job Handbook (I don't have the link right now). It lists the necessary qualifications for any federal jobs. Use that to help you tailor your resume or application.
DO NOT LIE...it may get you to the interview, but you will most likely be found out and then you will have a very hard time seeking employment. Embellish = OK, Lie = NO WAY!
Apply for the jobs no one else wants to do.
If you have specific questions, you can post them here or PM me, and I will try to help.
PS: The links provided above are excellent places to look. Most are updated weekly.
Also check usajobs.gov