Search for the Stolen Crown Jewels

The game has 5 levels:
-Naval bombing (make your way through enemy fighters and anti-air guns to their ships and bomb them)
-Air defense (shoot down enemy bombers before they bomb your factories or anti-air gun)
-Radio installation guard (stop enemy agents from planting bombs at a radio installation)
-Airship escort (included in demo, escort an airship into enemy territory, protect it by shooting down enemy bombers and, most important, bombing enemy anti-air guns)
-Radio installation sabotage (included in demo, plant bombs in an enemy radio installation guarded by enemy agents and gun towers)

Source: TheGamesDB