Yep, the trials I were part of mostly consisted not of trying to prove guilt, but giving of the defense a chance to present mitigating and extenuating evidence in an attempt to reduce sentence. Once the Article 32 hearing is done and the convening authority has decided to go to court martial, the evidence is pretty much there. Best to try to plea down the punishment.
And the best part is that your subject to being tried in a civilian court and under the UCMJ. When I was in Germany if you got busted for DWI on OR off post (Under the SOFA, GP had authority on post also), you got at least an Art 15 and then fined by the German Polizei.