Operation Deep Water
... that the 1957 NATO exercise Operation Deep Water involved the first use of helicopter-borne amphibious assault by the United States Marine Corps during an overseas deployment?
... that the 1957 NATO exercise <b id="mw_Q"><a href="./Operation_Deep_Water" id="mw_g" rel="mw:WikiLink" title="Operation Deep Water">Operation Deep Water</a></b> involved the first use of <a href="./Air_assault" id="mw_w" rel="mw:WikiLink" title="Air assault">helicopter-borne amphibious assault</a> by the <a href="./United_States_Marine_Corps" id="mwAQA" rel="mw:WikiLink" title="United States Marine Corps">United States Marine Corps</a> during an overseas deployment?