Philip Roosevelt
... that during World War I, aerial warfare expert Philip Roosevelt, first cousin once removed of Theodore Roosevelt, helped the United States Army plan its first air-land battle?
... that during <a href="./World_War_I" id="mwC10" rel="mw:WikiLink" title="World War I">World War I</a>, <a href="./Aerial_warfare" id="mwC14" rel="mw:WikiLink" title="Aerial warfare">aerial warfare</a> expert <b id="mwC18"><a class="mw-redirect" href="./Philip_Roosevelt_(WWI_Capt)" id="mwC2A" rel="mw:WikiLink" title="Philip Roosevelt (WWI Capt)">Philip Roosevelt</a></b>, first cousin once removed of <a href="./Theodore_Roosevelt" id="mwC2E" rel="mw:WikiLink" title="Theodore Roosevelt">Theodore Roosevelt</a>, helped the <a href="./United_States_Army" id="mwC2I" rel="mw:WikiLink" title="United States Army">United States Army</a> plan its first air-land battle?