 The Ke air superiority campaign began in mid @-@ January with nightly harassment attacks on Henderson Field by 3 @-@ 10 aircraft , causing little damage . On 20 January , a lone Kawanishi <unk> bombed Espiritu Santo . On 25 January , the IJN sent 58 Zero fighters on a daylight raid to Guadalcanal . In response , the CAF sent aloft eight Wildcat and six P @-@ 38 fighters , which shot down four Zeros without loss . 
