How do ants defend, attack, and gather?

Ants from Wikipedia
ants from Nature.ca
Ants exposition at the Smithsonian
ant cartoons from Off The Mark
ants at Pest World For Kids (has Fire Ants)
play Archibald's Adventure
L'organisation secrete des fourmis from Nature's Secret Power Ant video (en francais)
ant colony video from Nature's Secret Power (get out the kleenex) ants.avi video from Nature's Secret Power (the full documentary)