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<ul><li><b>Scope and content:</b>  Original Caption: How Naval Coast Defense Reserves are cared for at League Island Camp.  Recruits who have not yet received their uniforms learning the semaphore code.  This branch of signaling is one of the most important in use.  Many hours of the day are devoted to learning the wig-wag, instructions being given to the rookies by a petty officer on the field near their tent.</li></ul><p>Date Taken: 5/25/1917
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Photographer: Underwood and Underwood</div>
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Unknown author<span style="display: none;">Unknown author</span> or not provided</div>
<a href="https://en.wikipedia.org/wiki/U.S._National_Archives_and_Records_Administration" class="extiw" title="en:U.S. National Archives and Records Administration">U.S. National Archives and Records Administration</a>