Complex sentence: Byam decided that the best way to help the war effort was to use his experience with aluminum fabricating in the aircraft industry-taking positions at Lockheed and Curtis Wright for the duration of the war.
Split into simpler sentences: Byam decided that the best way to help the war effort was to use his experience with aluminum fabricating in the aircraft industry. He took positions at Lockheed and Curtis Wright for the duration of the war.