USS FORREST (DD-461), built at the Boston Navy Yard, was completed in April 1942 to the standard configuration for "Repeat-Gleaves Class" units. Because the planned two twin 40-mm mounts were not yet available, one quad 1.1-in mount was installed on the starboard side, and five 20-mm guns. Initially she was painted in Ms 12R(mod). By October 1942 she had repainted to Ms 22 with the same armament. In February-March 1943, completing about 25 March 1943, FORREST was upgraded to the standard two twin 40-mm mounts and seven single 20-mm guns at Norfolk Navy Yard. (DANFS skips over this) She remained in this configuration until converting to the DMS configuration (as DMS-24) in November 1944. The DMS configuration that FORREST was modified to, retained three 5-in/38cal guns, two twin 40-mm mounts, and seven 20-mm guns. The 54 mount and torpedo tubes were removed to accommodate the minesweeping gear. Any additional guns added isn't known by me. Likely no additional 20-mm guns would have been added, due to a lack of space for such a weapon. Adding 50-cal MGs around the ship was actually a pretty common installation late in WWII to counter floating mines and "Kamikaze Boats". In the last image I posted, you can see two 50-cal MG's atop the pilothouse.
Her operational history is outlined in DANFS, as an escort for USS RANGER and various convoys, plus D-Day support. More specifics can be found on Fold3 in her War Diaries. An interesting mission, was her escort mission and assignment to serve with the RN Home Fleet in the summer-fall of 1943. I have her noted as being assigned to DesRon 10, DesDiv 20. She could have been reassigned at some point, but I don't have that info. Her unit assignment was as a DMS was I believe with MineDiv 58.







