With a name like MONTGOMERY (major City name) conventional wisdom would say you are looking for a Cruiser.
CL-9 USS MONTGOMERY went out of business in 1919.
You are most likely looking for MONTGOMERY COUNTY (Cty?)Most ships carrying the name "County" were LSTs (LANDING SHIP TANK).Most sailors who crewed them said this meant LARGE SLOW TARGET. Lets go to the Big Book of Knowledge........Interesting to note in the following bio that the name was not assigned til the 50s........
Counties in 18 states of the United States.
LST-1041 Displacement:1,625 t. Length:328' Beam:50' Draft:14'1" Speed:12 k. Complement:226 Armament:8 40mm; 12 20mm Class:LST-511
LST-1041 was laid down by Dravo Corp., Neville Island, Pa., 12 November 1944; launched 20 January 1945; sponsored by Mrs. N. L. Gibson; ferried down the Ohio and Mississippi Rivers to New Orleans; and commissioned 19 February 1945.
Following shakedown along the gulf coast, LST-1041 loaded cargo and sailed for duty in the Pacific in early April.Steaming via the Panama Canal and Pearl Harbor, she reached Eniwetok, Marshalls, 5 June and began cargo shuttle missions to American bases in the mid- and western Pacific. Operating with LST Group 97, she sailed later in the month via Guam and Saipan to Okinawa where she unloaded military supplies in mid-July.Later that month she returned to the Marshalls and was anchored at Eniwetok when the Japanese agreed to cease hostilities.
LST-1041 thence returned to the western Pacific and from 2 to 24 September she supported occupation operations in Japan.After occupation duty, she sailed for the United States and arrived Norfolk, Va., 6 December.During the next decade this LST maintained a busy pattern of logistics, support, and amphibious training operation.She took part in numerous Atlantic Fleet and type-training exercises. Training and readiness operations sent her from the east coast to the Caribbean and the Gulf of Mexico.
In addition, LST-1041 took part in providing valuable support of operations off Greenland and in Baffin Bay.She carried out three logistics runs; and, during her third mission from September to November 1953, she assisted in salvaging SS ATLANTIC WATERS after the merchant ship grounded in the approaches to Goose Bay, Labrador.In September 1955, she deployed to the Mediterranean for duty with the 6th Fleet.During the next months she ranged the Mediterranean from Greece to southern France.Thence, she resumed training duty out of Norfolk in February 1955.
Named MONTGOMERY COUNTY 1 July 1955, the LST continued duty with the Atlantic Fleet Amphibious Force until 31 January 1956 when she decommissioned at Green Cove Springs, Fla.Assigned to the Atlantic Reserve Fleet, she remained in her Florida berthing area until mid-1960.Her name was struck from the Navy list 1 June 1960.In August 1961 she was sold under terms of the Military Assistance Program to the West German Federal Republic.Scheduled for conversion to battle damage repair ship, the conversion was never undertaken and she was scrapped in 1968 without having seen any commissioned service in the German Navy.