CREATE TABLE table_13084 ("Date  ( dd.mm.yyyy ) " TEXT, "Soviet Unit" TEXT, "Aircraft flown" TEXT, "Enemy Aircraft" TEXT, "Axis Unit" TEXT)

What is the axis unit of the aircraft yak-1b 'white 23', flown on 19.07.1943?
SELECT "Axis Unit" FROM table_13084 WHERE "Aircraft flown" = 'yak-1b "white 23' AND "Date (dd.mm.yyyy)" = '19.07.1943'
SELECT "Axis Unit" FROM "table_13084" WHERE "Aircraft flown" = 'yak-1b "white 23' AND "Date (dd.mm.yyyy)" = '19.07.1943'