Crew list of Ships hit by U-boats
Preston Hiatt Groppenbacher
USN (2800598). American
Roster information listed for Preston Hiatt Groppenbacher
| Ship | Type | Rank / role | Attacked on | Boat | |
|---|---|---|---|---|---|
 | USS Barr (DE 576) | Destroyer escort | Seaman First Class | 29 May 1944 | U-549 |