CREATE TABLE table_28342423_1 (aircraft_type VARCHAR2, parent_unit VARCHAR2)

Name the aircraft type for jagdgeschwader 26
SELECT aircraft_type FROM table_28342423_1 WHERE parent_unit = "Jagdgeschwader 26"
SELECT "aircraft_type" FROM "table_28342423_1" WHERE "Jagdgeschwader 26" = "parent_unit"