Observer Group
... that the Observer Group was the first joint-United States Army/Marine unit to be organized and trained specifically for amphibious reconnaissance?
... that the <b id="mwFak"><a href="./Observer_Group" id="mwFao" rel="mw:WikiLink" title="Observer Group">Observer Group</a></b> was the first joint-<a href="./United_States_Army" id="mwFas" rel="mw:WikiLink" title="United States Army">United States Army</a>/<a href="./United_States_Marine_Corps" id="mwFaw" rel="mw:WikiLink" title="United States Marine Corps">Marine</a> unit to be organized and trained specifically for <a href="./Amphibious_warfare" id="mwFa0" rel="mw:WikiLink" title="Amphibious warfare">amphibious</a> <a href="./Reconnaissance" id="mwFa4" rel="mw:WikiLink" title="Reconnaissance">reconnaissance</a>?