In a series of examples at
Amiens, the Germans were repeatedly driven back by powerful French artillery concentrations, and came to recognise improved French tactics. Once again, the German Army relied on the
Luftwaffe to help decisively, by silencing French guns and enabling the German infantry to inch forward.
[225]
The German spearheads were overextended and vulnerable to counter strokes, but the concentration of the
Luftwaffe denied the French the ability to concentrate, and the fear of air attack negated their mass and mobile use by Weygand.
[227]
On top of this added danger, the situation in the air had also grown critical. The
Luftwaffe established
air supremacy (as opposed to
air superiority) as the French air arm was on the verge of collapse.
[232] The
French Air Force (
Armée de l'Air) had only just begun to make the majority of bomber sorties; between 5 and 9 June (during
Operation Paula), over 1,815 missions, of which 518 were by bombers, were flown. The number of sorties flown declined as losses were now becoming impossible to replace. The RAF attempted to divert the attention of the
Luftwaffe with 660 sorties flown against targets over the Dunkirk area but losses were heavy; on 21 June alone, 37
Bristol Blenheims were destroyed. After 9 June, French aerial resistance virtually ceased; some surviving aircraft withdrew to French
North Africa. The
Luftwaffe now "ran riot". Its attacks were focused on the direct and indirect support of the German Army. The
Luftwaffe subjected lines of resistance to ferocious assault, which then quickly collapsed under armoured attack.
[233]