The video discusses the strategic patrol of the Atlantic for defense, highlighting the construction of submarines and the bustling activity at the New London submarine school. It details the rigorous training process for new sailors, including diving practices and periscope training. The video also covers the roles and responsibilities of submarine crew members, emphasizing the need for specialized skills and the extra pay associated with these roles. Finally, it describes life aboard a submarine, the high reenlistment rates, and the readiness of the crew to face challenges.

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