Throughout August 1918, No. 4 Squadron "maintained a high operational tempo" as the Allies launched a new offensive on the Western Front. On 7 August, Baker and two others took off from their squadron aerodrome at Reclinghem; all three machines were carrying a heavy load of bombs. Airborne over Pont-du-Hem, the trio released their bombs over German billets in the area, before spotting two Albatros D.Vs. The three Australians closed in on the two aircraft. Baker engaged an Albatros, his fire severing the left wing of the aircraft, effectively destroying the machine. Nine days later, a formation of 65 aircraft was assembled from No. 88 Squadron RAF, No. 92 Squadron RAF, No. 2 Squadron AFC and Baker's No. 4 Squadron AFC to execute a mass raid on the German aerodrome at Haubourdin. The fleet of aircraft was equipped with a range of incendiary and explosive bombs, in addition to machine gun ammunition. Led by Captain Harry Cobby, the aircraft from No. 4 Squadron were the first to sweep down and assault the target. At one point, Baker pursued a staff car until the vehicle ran up an embankment and flipped over. He later reported that "No one left the car". The raid, which was the largest aerial attack by Allied forces to that date, was highly successful; British estimates concluded that 37 German aeroplanes had been destroyed.