The 13th Marine Regiment was activated on July 3rd, 1916 as an infantry regiment. On September 1st,1919, the Regiment was deactivated.

On December 11th,1943 The Regiment was reactivated and redesigned as an artillery Regiment. The 13th Marines played an important role in securing Iwo Jima. February 6th 1946, The Regiment was deactivated.

In May 1966, 1st Battalion was reactivated and departed to Vietnam with RLT 26. The 1st Battalion is presently deployed in RVN.

June-October 1966, The Regimental Headquarters,2nd Battalion, and 4th Battalion were reactivated and commenced an extensive training program. In January 1967, 3rd Battalion was reactivated.

In January 1968, The Regiment supported and mounted out 2nd Battalion to WestPac.

On September 15, 1968, the 2nd Battalion returned from WestPac. While in Vietnam, the 2nd Battalion fired over 170,000 rounds of 107mm & 105mm in support of friendly forces. In addition, the 2nd Battalion trained Vietnamese cannoreers for the Republic of Vietnam Artillery Battalion. Casualties: The 2nd Battalion suffered 21 KIA & 59 WIA while inflicting a confirmed 947 KIA on the enemy.

During the months of December 1968 and January 1969, the Regiment supported and mounted out a platoon of ___ to WestPac.

Additional activities included many BLT,RLT, and Division exercises, and host support to Marine Corps Reserve units.

On October 15, 1969, The Regimental Headquarters, 2nd Battalion, and 4th Battalion were deactivated.

From Stars & Stripes January 1970