Apart from their role as fighters, the Brewster fighters were also used as dive bombers against Japanese troopships. Although reinforced by British Commonwealth Buffalo Mk I (B-339E) aircraft retreating from Malaya, the Dutch squadrons faced superior numbers in the air, usually odds of one against two or three. Timely early warning from British radar would have countered this deficit, especially in avoiding unnecessary losses from raids on airfields, but the British government had decided too late to send these: the first British radar stations became operational only towards the end of February. Had they been ready two weeks earlier, the outcome of the Japanese invasion here might well have been different (read Boer's book).