was this place ever involved in any war?
Yes,  World War II.
Aleutian Islands
During World War II, in what were the only two invasions of the United States during the war, small parts of the Aleutian islands were occupied by Japanese forces, when Attu and Kiska were invaded in order to divert American forces away from the main Japanese attack at Midway Atoll. 
when does a rainbow trout become a steelhead UNANSWERABLE what does this trout look like? Adult freshwater forms are generally blue-green or olive green with heavy black spotting over the length of the body. Adult fish have a broad reddish stripe along the lateral line, from gills to the tail, which is most pronounced in breeding males. what is their lifespan? 11 years is there any disease associated with this fish species? Yes, Enteric redmouth disease. where is this trout fish commonly found? he native range of is in the coastal waters and tributary streams of the Pacific basin, from the Kamchatka Peninsula in Russia, east along the Aleutian Islands, throughout southwest Alaska, the Pacific coast of British Columbia and southeast Alaska, and south along the west coast of the U.S. to northern Mexico. how is the above mentioned disease is caused in this particular fish? It is a bacterial infection of freshwater and marine fish caused by the pathogen. where is the above mentioned islands are located? They are a chain of 14 large volcanic islands and 55 smaller islands, most of which belong to the U.S. state of Alaska, but some belong to the Russian federal subject of Kamchatka Krai. which are the different mode of transport there? Air and Ferry service. has there ever been any nuclear testing in these islands? Yes, the U.S. conducted underground tests of nuclear weapons on Amchitka Island from 1965 to 1971 as part of the Vela Uniform program.
wiki:7251371
Aleutian Islands [SEP] World War II
During World War II, in what were the only two invasions of the United States during the war, small parts of the Aleutian islands were occupied by Japanese forces, when Attu and Kiska were invaded in order to divert American forces away from the main Japanese attack at Midway Atoll. The U.S. Navy, having broken the Japanese naval codes, knew this was just a diversion, and it did not expend large amounts of effort in defending the islands. More than 90 Americans were taken to Japan as prisoners of war. Most of the civilian population (over 800) of the Aleutians and Pribilovians were detained by the United States in camps in the Alaska Panhandle.