Well, as I see it (as an ex-GI), there are three possibilities.
1) The course of action is obvious to all of the hearers, down to the individual level, and the group is very small, and the civilian is trusted by the unit. Then the officer would likely say something like, "You heard the man. Do it." This would be unlikely for any task which the soldiers ordinarily do, such as combat.
2) More likely, although the task has been analyzed in detail, there's no reason to think that the civilian knows the capabilities of the individuals. So the order would be something like, "Jones, you do A. Smith, you take B.... Let's go."
3) And, depending on the officer and the unit, the order might well be, "Sergeant, get it done."