I do agree that the soldiers can be quite brittle in terms of their spiritual resistance to oncoming bullets. Though my experience is also that under close leadership broken troops can recover and resume action. Of course when these thing happen, an attack is slowed down by the need of the platoon leader to stay in close proximity to the shaken or even broken soldiers. Give em a minute or so rest and observe their status. As soon as they may have recovered, give em an easy task, such as facing the enemy or let em move 10 yards forward and hide. In brief, keep your hens together and remain patient, also under fire.