Complex sentence: Beurling's wartime service was terminated prior to war's end; in an attempt to continue combat flying in the postwar era, he lost his life in a crash en route to delivering an aircraft to Israel.
Split into simpler sentences: Beurling's wartime service was terminated prior to war's end. In an attempt to continue combat flying in the postwar era, Beurling lost his life in a crash en route while delivering an aircraft to Israel.