Sint-Truiden / Brustem Airfield (Dutch: Vliegveld Sint Truiden, ICAO: EBST) is an airfield located in Brustem [nl], 1.5 nautical miles (2.8 km; 1.7 mi) southeast of Sint-Truiden (Limburg) and approximately 37 mi (60 km) east of Brussels.

During the occupation of Belgium by Nazi Germany, the facility was called "St. Trond"[2] and became a major Luftwaffe air base during the Battle of France.

KG 3 arrived at the end of June 1940 and took part in the Battle of Britain during the summer, then later, switching to night bombing of English targets, remaining until March 1941.

Heinz-Wolfgang Schnaufer, a German Luftwaffe night-fighter pilot and the highest-scoring night fighter ace in the history of aerial warfare, was based at Sint-Truiden at various times during the war.

It was declared operationally ready for combat units on 18 September, only a few days after its capture from German forces, being designated as Advanced Landing Ground A-92 or "Saint Trond Airfield".

[7] Although operationally usable, Brustem was a wrecked base from the numerous Allied air attacks since late 1942 and what was blown up by the Germans as they withdrew.

The Americans made do with what could be repaired, with the 832nd Engineer Aviation Battalion moving in what equipment was necessary to conduct combat operations.

[8] Under Allied control, the American Ninth Air Force used the base for several units from 7 September 1944 until closing it in July 1945.