Have stranded amphibious troops ever integrated locally?

Has an amphibious force ever been cut off and then integrated into the local population?

Roman examples are mentioned, and a family account describes an Armada survivor who married locally and remained as a useful sailor.

Roman campaigns are mentioned as examples of isolated forces remaining among local populations, without a particular campaign being identified. The Spanish Armada provides the maritime comparison. Dr. Clarke recounts a family story about a survivor who washed ashore, married a local woman and stayed. His seamanship made him useful aboard a family-owned merchant ship.