<a href="https://en.wikipedia.org/wiki/Vietnam_War" id="mwAQY" rel="mw:WikiLink" title="Vietnam War">Vietnam War</a>: The U.S. Army begins <a href="https://en.wikipedia.org/wiki/Operation_Ranch_Hand" id="mwAQc" rel="mw:WikiLink" title="Operation Ranch Hand">Operation Ranch Hand</a>, spraying an estimated <span about="#mwt57" data-mw='{"parts":[{"template":{"target":{"wt":"convert","href":"./Template:Convert"},"params":{"1":{"wt":"20"},"2":{"wt":"e6USgal"},"3":{"wt":"m3"}},"i":0}}]}' id="mwAQg" typeof="mw:Transclusion">20</span><span about="#mwt57" typeof="mw:Entity"> </span><span about="#mwt57">million US gallons (76,000</span><span about="#mwt57" typeof="mw:Entity"> </span><span about="#mwt57">m</span><sup about="#mwt57">3</sup><span about="#mwt57">)</span> of defoliants and herbicides over rural areas of South Vietnam in an attempt to deprive the <a href="https://en.wikipedia.org/wiki/Viet_Cong" id="mwAQk" rel="mw:WikiLink" title="Viet Cong">Viet Cong</a> of food and vegetation cover.<sup about="#mwt61" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-10"}}' id="cite_ref-10" rel="dc:references" typeof="mw:Extension/ref"><a href="./August_10#cite_note-10" id="mwAQo" style="counter-reset: mw-Ref 10;"><span class="mw-reflink-text" id="mwAQs">[10]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-10"><cite about="#mwt58" class="citation book cs1" id="CITEREFBuckingham1982">Buckingham, William A. Jr. (1982). <a class="external text" href="https://media.defense.gov/2010/Sep/28/2001329797/-1/-1/0/AFD-100928-054.pdf" id="mwB-s" rel="mw:ExtLink nofollow"><i id="mwB-w">Operation Ranch Hand: The Air Force and Herbicides in Southeast Asia 1961–1971</i></a> <span class="cs1-format" id="mwB-0">(PDF)</span>. Office of Air Force History. p.<span id="mwB-4" typeof="mw:Entity"> </span>11. <a class="external text" href="https://ghostarchive.org/archive/20221009/https://media.defense.gov/2010/Sep/28/2001329797/-1/-1/0/AFD-100928-054.pdf" id="mwB-8" rel="mw:ExtLink nofollow">Archived</a> <span class="cs1-format" id="mwB_A">(PDF)</span> from the original on 2022-10-09.</cite><span about="#mwt58" class="Z3988" id="mwB_E" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=Operation+Ranch+Hand%3A+The+Air+Force+and+Herbicides+in+Southeast+Asia+1961%E2%80%931971&amp;rft.pages=11&amp;rft.pub=Office+of+Air+Force+History&amp;rft.date=1982&amp;rft.aulast=Buckingham&amp;rft.aufirst=William+A.+Jr.&amp;rft_id=https%3A%2F%2Fmedia.defense.gov%2F2010%2FSep%2F28%2F2001329797%2F-1%2F-1%2F0%2FAFD-100928-054.pdf&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AAugust+10"></span></span>