In the early hours of 8 August 1944 , II Canadian Corps launched Process_start the attack Attack using Using mechanized infantry .

The ARVN , buttressed by said U.S. support , stopped Process_end the largest and first mechanized PAVN offensive to date during the Easter Offensive of 1972 , resulting in mutually heavy casualties , but failed Earnings_and_losses to recapture all territory , leaving its military situation difficult .