World War II US Army propaganda movie footage of the 914-mm <a href="https://en.wikipedia.org/wiki/Little_David" class="extiw" title="en:Little David">"Little David" mortar</a> being prepared and fired.
US Army Pictorial Service. Signal Corps.
CC BY 3.0
<p>Downloaded from <a rel="nofollow" class="external free" href="https://archive.org/details/July1945NewsreelFromThePotsdamConferenceToThe914mmlittleDavid">https://archive.org/details/July1945NewsreelFromThePotsdamConferenceToThe914mmlittleDavid</a> Movie file J1945
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