 On the 7th , the division 's 2nd Brigade inserted its three battalions unopposed . After ten days ( and only one significant firefight ) the American troops returned to South Vietnam , leaving the area to the ARVN . Historian Shelby Stanton has noted that " there was a noted lack of aggressiveness " in the combat assault and that the division seemed to be " suffering from almost total combat <unk> . " During Operation Binh Tay II , the ARVN 22nd Division moved against Base Area 702 from 14 – 26 May . The second phase of the operation was carried out by ARVN forces against Base Area 701 between 20 May and 27 June when elements of the ARVN 22nd Division conducted operations against Base Area 740 . 
