The air war over Guadalcanal stopped for a while. There were no Japanese air raids between 14 and 27 September due to bad weather. Both sides reinforced their air units during this time. The Japanese delivered 85 fighters and bombers to their air units at Rabaul while the U.S. brought 23 fighters and attack aircraft to Henderson Field. On 20 September the Japanese had 117 aircraft at Rabaul while the Allies had 71 aircraft at Henderson Field.