The most well-known coast guard mascot during world war ii, who provided a morale boost to his crew, was named

  Sinbad.

Explanation:

  It was a mixed-breed dog, one of two animals to be classified as non commissioned officers of the United States Army. It served on the U.S.S. Geroge W. Campbell for 11 years including combat in World War II.

  Sinbad became a public figure as part of the Homefront campaign.

  I hope this answer helps you.

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