Ideally you wouldn't do both on the same day. In a perfect world they would be performed on different days. In a less perfect world they'd be performed on the same day with lifting first. If fighting is the priority then fighting would happen first. I'd take in some maltodextrin before the workout, dextrose during, and. probably not go to solid food until after training. The same rules apply to both modes of activity. They are high intensity and thus require glucose quickly. Maltodextrin releases a little slower than dextrose so it's good pre-workout. Dextrose is better intra because it is immediate and the simplest form of sugar.