CREATE TABLE table_10335_1 (occupied_territory VARCHAR2, operational VARCHAR2)

what's the occupied territory with operational period of may 1940 january 1945
SELECT occupied_territory FROM table_10335_1 WHERE operational = "May 1940 – January 1945"
SELECT "occupied_territory" FROM "table_10335_1" WHERE "May 1940 – January 1945" = "operational"