
Flying low over the jungle, an A-1 Skyraider drops 500-pound bombs on a Viet Cong position below as smoke rises from a previous pass at the target, on December 26, 1964.

A U.S. Marine CH-46 Sea Knight helicopter comes down in flames after being hit by enemy ground fire during Operation Hastings, just south of the demilitarized zone between North and South Vietnam, on July 15, 1966. The helicopter crashed and exploded on a hill, killing one crewman and 12 Marines. Three crewmen escaped with serious burns.

Flares from planes light a field covered with the dead and wounded of the ambushed battalion of the U.S. 1st Cavalry Division in the Ia Drang Valley, Vietnam, on November 18, 1965, during a fierce battle that had been raging for days. Units of the division were battling to hold their lines against what was estimated to be a regiment of North Vietnamese soldiers. Bodies of the slain soldiers were carried to this clearing with their gear to await evacuation by helicopter.
Quite a few more amazing photos. However, they're quite graphic - so, just a heads up before you click the below link.
http://imgur.com/gallery/VhiNd