Explain to your team what will happen if they don’t do their jobs well. Explain how their job titles, no matter how small, fit into the big picture and the strategic mission.
The radioman on the battlefield has the most important job because if the team runs into an enemy force and comes under the threat of being overrun, it’s the radio on his back and his ability to use it that’s going to save the team. The same is true for medicine.
There’s nothing more important than bringing the wounded back alive. It’s only him and him alone who keeps the men alive. The rear security man is the most important because he knows where the team is going and what direction to take if they get into a gunfight. The list just goes on.
The point is that everyone has the most important job. So, let them know that.