Was Lt. Col. Chamberlain right? Can a moral idea win a war

I believe that Col. Chamberlain was right.We as human beings always look for someone to lead us into victory,and Col. Chamberlain was that leader.As seen in the video he was still going to battle with or with out some of his troops,but that's what we look for in a leader fearlessness.I also believe that Col. Chamberlain is a righteous man,givin his troops the choices of going with him into battle.After he had that speech with his troops they all felt inspired to go into battle,and all because of a moral idea.For example he says this qouete "but it's not the land, theres always more land,it's the idea we all have of value".Thats what I believe is a true moral idea.