1st Infantry Division
The 1st Infantry Division was the first division to go overseas in World War I. During World War II, it was the first to reach Britain and France. On July 12, 1965, the 2nd Brigade of the Big Red One landed in the Republic of Vietnam, the first element of an infantry division to arrive.
During five years in South Vietnam, the Big Red One Participated in many significant battles and operations such as Birmingham, Junction City, Billings, Shenandoah II, Quyet Thang, Loc Ning V, An Loc and Operation Toan Thang.
July 1969 marked the beginning of a coordinated war effort by Big Red One soldiers and members of the Army of the Republic of Vietnam's 5th Division. This program, which is referred to as Dong Tien (progress together), resulted in victories over the enemy while preparing the ARVN soldier to assure security in his homeland.
In December of 1969, President Nixon announced that the 1st Division would be one of the major elements of the Phase III redeployment. The Division was reduced in strength and moved to Fort Riley, Kan.
15th Field Artillery Regiment Vietnam Supported the 1st Infantry Division ... November 1969, participating in most of the 1st Infantry Division's major battles ... November 1971, at firebases throughout the Central Highlands of Vietnam