Complex sentence: The airfield was located near the Railhead on the main railroad line to Chittagong, and was used by the 1st Combat Cargo Group as a supply point and staging airfield for resupply airlift drops over Burma from 15 May until June 1945.
Split into simpler sentences: The airfield was located near the Railhead on the main railroad line to Chittagong. It was used by the 1st Combat Cargo Group as a supply point and staging airfield for resupply airlift drops over Burma from 15 May until June 1945.