The battle over airfields continued into September. On the third day, Göring met with Sperrle and Kesselring. Göring was sure Fighter Command was exhausted and favoured attacking London to draw out the last of the British fighter reserves. Kesselring enthusiastically agreed; Sperrle did not. Kesselring urged Göring to carry out an all–out attack based on the unproven assertion that Fighter Command had been virtually destroyed. Sperrle dismissed Kesselring's optimism, and put British strength at the more accurate figure of 1,000 fighters. Nevertheless, Kesselring's perception prevailed. The disagreement between the two air fleet commanders was not uncommon, and although they rarely quarrelled, their commands were separate and they did not coordinate their efforts. Instead, they fought their own private campaigns.