Original sentence: In addition to the captured airfields,  numerous temporary soft-surfaced airfields were constructed for fighter operations by both Twelfth and Fifteenth Air Force fighter units.These airfields, by and large, consisted of grass or Pierced Steel Planking runways and parking areas, with support structures were quickly constructed out of wood or tents, along with (if needed) a temporary steel control tower
Edited sentence: In addition to the captured airfields,  numerous temporary and semi-permanent airfields were constructed for fighter operations by both Twelfth and Fifteenth Air Force units.These airfields, by and large, consisted of grass or Pierced Steel Planking runways and parking and dispersal areas, with support structures were quickly constructed out of wood or tents, along with (if needed) a temporary steel control tower