what was the range in emotions that Henry Experienced as he approached battle?

There are two battles to to consider here: there is one in chapter 3 and another in chapter 4. I'm assuming that you are referring to Chapter 3.

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. They are then moved to another position, then another. The anticipation starts to irk Henry, who wants to return to camp or go in a battle.