The captain of a submerged British submarine observes the surface through his periscope during the First World War.

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The captain of a submerged British submarine observes the surface through his periscope during the First World War. From L'Illustration, 1916.

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License: Licensed
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Keywords: 1st, british, captain, naval, navy, observes, observing, periscope, royal, submarine, submerged, surface, war, warfare, world