Bug out to a rear operating base (ROB), build some hasty defensive positions, leave the rear-echelon mother fuckers (REMFs) to man the defensive positions, monitor the radios, run the rear-operating base, and most importantly, guard the families. Then the operators (those physically able to run-&-gun and trained to do so effectively) move out to establish a forward-operating base (FOB) considerably closer to the action. Then the operators conduct combat operations from the FOB. Meanwhile, the REMFs back at the ROB are continuosly improving upon those hasty defenses initially constructed. So when the operators finally come back to the ROB for a break, what was a fox hole when they left will now be a completely camouflaged bunker. The REMFs are also training any new recruits that might show up, and doing any other duties they may have around the ROB.
The main thing is that the operators know that their wives and daughters are safe and in good hands 'back at the ranch' while they're out raiding an enemy outpost at 2am in the pouring down rain.
This is not necessarily any unit's plan, but I do believe that it is a good one.