Advance airfield and forward airfield are military terms for a relatively primitive ad-hoc airfield used for refueling and re-arming air units as part of forward operations near the enemy. Also called
An advance airfield in use during the Second World War in Asch, Belgium, March/April 1945
Advanced landing grounds were temporary advance airfields constructed by the Allies during World War II during the liberation of Europe. They were built in the UK prior to the invasion and thereafter
Advance airfield
…hospital care at the rear. Shorter-range aircraft such as fighters can stage from an advance airfield to escort longer-range bombers in formation. Advanced Landing Ground Index of aviation articles…
Photo of the runway at Advanced Landing Ground A-43 (St Marceau, France) being constructed by IX Engineering Command, August 1944
A USAAF Engineer clearing out the wreckage of a destroyed Luftwaffe Messerschmitt Bf 109 aircraft at an ALG, with a Lockheed P-38 Lightning flying overhead on landing approach
IX Engineering Command putting down a Pierced Steel Planking (PSP) Runway at an Advanced Landing Ground under construction
U.S. Airfields in Europe as of 8 May 1945