 At least 1500 Montanans died in the war.Montana also was the training ground for the First Special Service Force or "Devil's Brigade", a joint U.S-Canadian commando-style force that trained at Fort William Henry Harrison for experience in mountainous and winter conditions before deployment.Air bases were built in Great Falls, Lewistown, Cut Bank, and Glasgow, some of which were used as staging areas to prepare planes to be sent to allied forces in the Soviet Union.