The sense of loyalty is clearly shown, not only in the soldiers' following of orders and willingness to subject themselves to often increasingly-adverse conditions in order to achieve the goals that their commanding officers had set for themselves and to continue advancing the Allied lines, but also in their commitment to their fellow soldiers. This also displays the soldier's sense of duty, honor, and integrity. There is no sense in the book of soldiers flagging due to the hardships that they endured, but rather the perseverance that is born of an extreme commitment to duty. This conduct is the only type of honorable conduct for a soldier; there is no honor in allowing those around you to pick up your slack...

There is also no integrity in such a stance, and it was each individual soldier's commitment to retain their integrity as a soldier that made the collective army so powerful.
Though Ambrose may slightly romanticize the notion of being at war with a band of like0minded soldiers, all equal in their dedication and determination, it is difficult to disagree with his thesis. All of the strategy and planning in the world cannot amount to anything if there isn't a sizable corps of individuals ready to carry these strategies and plans out. This is exactly what these citizen soldiers provided, and they deserve every ounce of credit they receive.