Military personnel deployed in the Theater of Operations should take into account the differences between Group Work and Team Work. Both cases of cooperative work are necessary but they are different and should be applied in different contexts. The differentiating factor is the TASK.
In the first case (Group Work) everybody has approximately the same task, moving in unison to reach the Crew’s common goal.
In the latter case (Team Work) each one has a different task to accomplish, and only with the accomplishment of all different tasks can the Crew achieve its common goal.

Pending on the situation, the same people can do the different works. Group Work is used in massive “all together” action/effort; whilst while Team Work is used in problem solving of technical aspects and decision making assessments.
It is for the leadership to decide which line of work should be followed, and assign the necessary resources.
