Today on the radio, I heard about a commander or an officer who was in a cave waiting for a battle to start and he was feeling that he will be defeated because of the large enemy forces (he was in a negative morale). However in that cave he saw a spider trying to build a web, but every time it built it, the wind destroyed it, but the spider didn't give up and he kept trying until he successfully built it, so the commander took the spider as an example that he shouldn't give up and engaged the battle with good morale.
I know there is not enough in my question and I did some google search, search2, does anyone what is the name of that man? (in the radio he state his named might William but he was not sure). what is the name of the battle ?