My dad's WW2 Army discharge record shows that he sailed on Feb 21 1945 to destination ETO and arrived Feb 26 1945. His return began on Oct 20 1945, arriving on Oct 26 1945. I can;'t find an easy way to trace the names of the boats and the precis

My dad's WW2 Army discharge record shows that he sailed on Feb 21 1945 to destination ETO and arrived Feb 26 1945. His return began on Oct 20 1945, arriving on Oct 26 1945. I can;'t find an easy way to trace the names of the boats and the precise destination. I know he was a weatherman (confirmed by discharge record) and he told us that he was stationed in Greenland. I'm looking to find where and when he was Greenland. Unfortunately. his service records were burned in the '73 National Archives Fire. Any help would be much appfreciated.