Well, this depends on how you came to be on post. If you merely trashed some fencing after losing control of your vehicle while on a road near the base, then your case may get rejected by the feds and sent to state court. If you are military and stationed on that post, then your case likely stays federal even if you didn’t make it past the gatehouse. In that case, you may face Article 15 issues as well as the civilian federal prosecution. The upside of a federal DWI is that federal prosecutors have less experience trying DWIs and federal judges actually read defense briefs.
You may have an opponent who isn’t up to snuff when the judge has high expectations. The bad news is that you won’t be getting a jury unless your DWI managed to be a federal felony (which is just bad). Some AUSAs (Assistant U.S. Attorneys) are getting better at DWI practice, but few stay near the cutting edge. Another difference is in the law governing DWIs in federal court. Texas law allows for a variety of defensive tactics that are not available in federal court. On the other hand, federal procedure is more exacting than Texas criminal procedure. You need an experienced DWI lawyer to maximize your edge on the prosecutor and an experienced federal lawyer. At Hoelscher Gebbia Cepeda PLLC, we can provide both.