Photograph of LCpl Polo Castillo, Jr., 1st Motor Transport Battalion, 1st Marine Division in Phu Bai, Vietnam. He is holding a rifle while standing in front of a tent on a military base. The handwriting on the photo reads "Polo Castillo, Jr." and "Vietnam 1968."

Photograph of LCpl Polo Castillo, 1st Motor Transport Battalion, 1st Marine Division at Gia Le Combat Base, Vietnam. Polo is posing in front of a tower of sandbags and military structures. The back of the photograph reads, "The jacket I have on is a flak jacket which protects us from shrapnel or what have you. Can you see me wearing this heavy protective jacket, rifle, helmet + so on with this heat. Gia Le Combat Base, April-68. Your Loving Fiancee, Polo Castillo."

Photograph of Andy Anderson (seated left), Santos Arellano (standing left), Polo Castillo (standing right) of the 1st Motor Transport Battalion, 1st Marine Division. The men are posing in front of the Explosives sign at Gia Le Combat Base, Vietnam.

Photograph of Cpl Polo Castillo (1st Motor Transport Battalion, 1st Marine Division) on guard duty in a bunker. The bunker is located on the Gia Le Combat Base, Vietnam.

Photograph of Marine with the 1st Motor Transport Battalion, 1st Marine Division manning a 50 caliber machine gun in a bunker at Gia Le Combat Base, Vietnam.

Photograph of Cpl Polo Castillo - 1st Motor Transport Battalion, 1st Marine Division with children in Vietnam where his battalion was searching and assisting local villages. The back of the photograph reads" November 68."

Photograph of Cpl Polo Castillo (1st Motor Transport Battalion, 1st Marine Division) in a Jeep en route in a convoy to Da Nang, Vietnam. Castillo was stationed at Gia Le Combat Base. The back of the photograph reads," My Darling Wife, Yolanda. This was taken a few hours before we left on the convoy to Da Nang. At that time, that jeep I drive didn't have a windshield or a top. The last few hours at Gia Le. What'cha think of my little groovey hat. Ha! Love Ya Forever, Your Loving Husband, Paul Castillo. Gia Le, RVN September 1968."

Photograph of Cpl Polo Castillo (1st Motor Transport Battalion, 1st Marine Division) on guard duty in a bunker at Gia Le Combat Base, Vietnam.