The Two Towers
You know the part at some point during the 12 hours of trilogy where a bunch of alliance people (as in, not orcs) were suiting up to defend something involving walls against a fearful attack and they were (touchingly) sticking helmets on young boys and swords in the hands of babes etc..?
Which movie was this in and what was being defended?
, Helm's Deep.
Howard Shore's orchestral score swells, there's portentious dialogue (I think this is when Theoden recites "Where is the horse and the rider," an old Anglo-Saxon poem), kids and old men look scared.