Riding to help an ambushed detail, Captain Adams falls for a clever Indian trick that leaves the fort almost defense-less against an all-out attack.; An untried officer turns coward in an Apache attack, then finds courage to fight and redeem himself.; A soldier spends much time studying Army tactics, then turns traitor to join the Apaches in an attack on the fort.; How Army posts prepared for severe winter weather.; How Army-trained surveyors helped explore the western United States.