The Sullivans were five Irish-American brothers from Waterloo, Iowa: George, Francis, Joseph, Madison and Albert, ages 20 to 27. They worked together at the local meatpacking plant & played ball in the vacant lot next to their house. Their motto was "We stick together."
After Pearl Harbor, they learned their friend Bill Ball had been killed aboard the USS Arizona. On January 3, 1942, all five enlisted in the Navy together, on one condition: they would serve on the same ship. The Navy normally discouraged that. They got their way, and all five went to the light cruiser USS Juneau.
On November 13, 1942, during the Naval Battle of Guadalcanal, the Juneau was torpedoed and exploded. She sank within moments. Of nearly 700 men aboard, only about ten survived. None of the Sullivan brothers came home.
Back in Iowa, their mother Alleta heard rumors around town and wrote to the Navy asking if they were true. I can't imagine writing that letter.
It's still the greatest combat loss by a single American family, and it's why the military has a sole survivor policy today. I've always felt their motto says everything about that generation. They stuck together, all the way down.