On 1 March 1918, while stationed at Les Moëres aerodrome near Veurne, it would be reorganized into the 9ème Escadrille and become part of Belgium's first fighter wing, the Groupe de Chasse.

[1][5] During the initial years of World War I, the Aviation Militaire Belge was based in the diminished remnant of a small country, and performed largely in support of a defensive army.

The squadron equipment was augmented by Fokker D-VII aircraft, yielded by the Germans as compensation for damages during World War I.

To improve mobility and the possibility of deployed operations, each group comprised a maintenance squadron, a field train of about 25 vehicles, and an anti-aircraft unit of 40mm Bofors guns.

On the morning of 10 May, 9 Squadron rejoined its diversion airfield at Duras, few hours before Bierset was bombarded by Dornier 17's of the Luftwaffe.

The Squadron crest represented the "Cocotte", originally painted on Willy Coppens’ Nieuport 17 in 1917,[12] but this time in silver on a green background.

Although having received a new designation, the name of the former unit assuming the squadron's mission, "FFM" (Flight de Formation des Moniteurs) stuck until well into the next century.

Subsequently, the squadron's expert instructors developed a training course for the benefit of those requiring an introduction to civilian IFR flying.

A few years later, on 12 September 2000, the Air Force's Tactical and Training Commands merged into COMOPSAIR, and the TEC was transferred into the structure of 1st Wing.

Although the insignia of the "Green Cocotte" had survived the different changes in organization, the "shadow" squadron number had slipped into oblivion.

After the move of the Alpha-Jets to Cazaux in 2004, on 14 November 2005,[14] the TEC returned to being a flying unit, and started once more training the new instructors on SF260.

Slowly, the unit continued to evolve, first by taking on the IFR course again, later by hosting and supervising the Flying duties of several Staff Officers.

After a further re-organisation of the Belgian Armed Forces, the A109BA helicopters of the Wing Heli, based at Bierset, moved to Beauvechain on 1 September 2010.