Battlefield Vietnam (2004) - Siege of Khe Sahn 

February 29th, 1968 - For 77 days, the North pounded on the Khe Sahn Combat Base hoping to repeat their victory over the French at Dien Bien Phu. The N.V.A. tried everything to break the U.S. resolve. Eventually, the U.S. used creative artillery tactics to break the siege and repel the N.V.A.
Developer: Digital Illusions CE
Publisher: Electronic Arts