S1.E5 ∙ Invertebrados Marinos

During World War II, two Mexican naval cadets become best friends and share some good times when off duty. However when Mexico joins the war effort, they must leave their carefree existence and serve in the gruesome conflict.

The title is derived from the flag of England's Outward Bound Sea School at Aberdovey, Wales: Mike Merriworth, a Merchant Navy hero of the Korean War returns to England after three years of captivity in Communist hands, his mind confused by brainwashing and indoctrination at the hands of his captors, and accepts a post as an instructor at the Outward Bound Sea School. He is placed in charge of "Nelson Watch," which consists of 12 boys from all walks of British life, including the usual juvenile delinquent, a dictatorial bully, and a kid afraid of heights. He is a harsh commander and fails to appreciate some of their problems in light of what he has been through.

A man protective of his brother checks out the girl his brother is in love with, in order to see if she's the real thing or just trying to take advantage of him. Unfortunately, he winds up falling in love with her himself.

During World War Two,Big Dan (Flame) is a K-9 dog trained in warfare, and his American soldier mast is killed by the Germans. Years later, three men show up at a hunting lodge in America, where Big Dan is a pet of the young son of the lodge-owners. One of the men is wearing a trench coat worn by the his former master's killer. Big Dan attacks the man, who is revealed as a Nazi agent, spying on a nearby Atomic project.

In 1941, an American flyer volunteers for the British RAF but must learn to be an obedient team player rather than a risky thrill-seeking individualist.

An American joins the French Foreign Legion in order to rescue a boyhood friend.