En diciembre de 1965, el cabo de la marina de guerra Alfredo Salazar se emparejó con un pastor alemán llamado Kaiser y los dos rápidamente formaron un estrecho vínculo. Según Salazar, "vino a mí y me lamió la mano. Desde entonces, éramos un equipo". Se entrenaron en Fort Benning, Georgia, con la 26ª Sección de perros exploradores del ejército, y después de una temporada en Camp Pendleton en California, la pareja fue enviada a la República de Vietnam.
In July 1966, Salazar and Kaiser were leading a patrol through heavy brush toward a small village. After breaking through the undergrowth they were ambushed by the Viet Cong and Kaiser was hit in the initial barrage. As the patrol moved in to attack the enemy, Salazar knelt next to his dog. Kaiser tried to lick his handler's hand one last time right before he died.
Kaiser was carried back to the camp and buried next to a tree near the tents. As a tribute to their fallen comrade, the men named their camp Camp Kaiser. A sign was posted on the site which read "This camp is named in honor of Kaiser a scout dog who gave his life for his country on 6 July 1966 while leading a night combat patrol in Vietnam."
In the short time Salazar and Kaiser knew each other, the two participated in a dozen major operations and made more than 30 combat patrols. After Kaiser's death, Salazar felt he lost "one of the closest friends he ever had."