In September tiredness and a decline in morale began to affect the fighter pilots. The lacked sufficient pilots and aircraft to maintain a constant presence over England. Commanders demanded three to four sorties per day by the most experienced men. By the end of September, Galland noticed that "the stamina of the superbly trained and experienced original of pilots was down to a point where operational efficiency was being impaired". Göring's interference with tactics without regard for the situation, the capabilities of German aircraft, rapid adaptation to German tactics by the British and the poorer quality of pilot replacements to JG 26 put a greater burden on the dwindling number of veteran pilots. This situation led to a conflict between the two significant psychological needs of the fighter pilots: confidence in their aircraft and tactics.