Complex sentence: Manning, Separations, p46 In 1948, Air Training Command began rebuilding its training complex, but the command was still reeling from the heavy losses it sustained in its instructor force by demobilization.
Split into simpler sentences: Manning, Separations, p46 In 1948 Air Training Command began rebuilding its training complex. The command was still reeling from the heavy losses it sustained in its instructor force by demobilization.