He is recorded as one of the highest ranking enlisted Chinese American servicemembers held as a POW and killed during World War II.

[14] On December 29, 1944, Hop was a waist gunner aboard a B-17G Flying Fortress with nine crew members, which took part in a large-scale bombing mission to support the Battle of the Bulge.

[12] One crew member was found deceased by German soldiers in the woods near Oesterich, Germany, and was reportedly buried in a local cemetery.

Investigations continued for several years, but by April 1950 AGRC exhausted all efforts to recover the three missing men and issued a recommendation they be declared non-recoverable.

[4][19] The archive documents referenced a war crimes case which indicated Hop was captured and killed by German SS troops near the town of Kamp-Bornhofen, and buried in the local cemetery there.

[12][4][23] His remains returned to the United States in January 2025 where he received a San Francisco Police Department escort and burial with full military honors at Golden Gate National Cemetery.