Five brothers in WII wanted to serve together, so the Navy allowed them to be assigned to the same ship. Today there’s a policy prohibiting this sort of thing.
In November, 1942, the cruiser USS Juineau was in the South Pacific when it was torpedoed. On board were five brothers – George, Frank, Joe, Matt and Al Sullivan. They all died that day. The Navy didn’t like putting serving siblings on the same ships, but the Sullivan boys had insisted on serving together… with tragic results.