Operation Sinsay
... that the battalions imported from Military Region 3 during Operation Sinsay held their objective for three days before being returned?
... that the battalions imported from <a href="./Military_Regions_of_Laos" id="mwCJ0" rel="mw:WikiLink" title="Military Regions of Laos">Military Region 3</a> during <b id="mwCJ4"><a href="./Operation_Sinsay" id="mwCJ8" rel="mw:WikiLink" title="Operation Sinsay">Operation Sinsay</a></b> held their objective for three days before being returned?