As for Captain Kangaroo, can't you tell he was a Marine by his haircut?
"Captain Kangaroo was the longest running network children's show of all time - from 1955 until 1984, the good Captain could be seen on CBS. Hugh "Lumpy" Brannum played sidekick Mr. Green Jeans, joining Cosmo Allegretti's hand-puppets Mr. Moose and Bunny Rabbit in the Captain's Treasure House."
Later, there was also a 'toon version, IIRC.
see: Captain Kangaroo
And now after all these years, I learn the Captain was a Jarhead, even if not a WW-II combat vet. But I'm not surprised about it either.