
Foster arrived in Vietnam in August 1966. He was killed in action on February 8, 1967 in Pleiku Province, Vietnam. While on a reconnaissance patrol, he slipped into a deep, partially concealed waterhole and drowned in la Drang River.
Foster was awarded the National Defense Service Medal, the Vietnam Campaign Medal, the Marksmanship Rifle Medal and the Combat Infantry Badge.
Services for Foster were held at Hunt Funeral Home in Asbury Park, NJ. He is buried in Greenwood Cemetery, Brielle, NJ.