How did Henry learn that he was not the only soldier facing the oncoming battle with great fear?

The overall mood of the troops is now very serious. They are facing a true test of their mettle very soon, and it affects them in different ways. Primarily, though, the untried men are quiet and absorbed, waiting to finally face war. They are first ordered to dig in, but are then ordered to pull back. The soldiers become annoyed, asking why they were marched this much if they are not going to face the enemy.