0
1965.
WWII validated the "Airborne" divisions (paratroopers) Vietnam validated the "Airmobile" divisions (helicopters); Ia Drang battle in '65.
No
The Battle of Ia Drang lasted from 14 November through 18 November in 1965 .
South Vietnamese troops did not participate in the battle.
There were an estimated 1000 NVA(North Vietnamese Army) casualties in the Battle of the Ia Drang ; see related link to additional information .