the Battle of the Philippine Sea.

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Across
  1. 2. A vessel used to transport goods or people by water.
  2. 4. A branch of military services that conduct operations at sea
  3. 9. an armed warship designed to operate submerged in the sea for long periods of time
  4. 11. Airplane, Helicopter, machine capable of flight.
Down
  1. 1. A person in authority over troops/military
  2. 3. invading a country/region with armed forces
  3. 5. Two armed forces fighting
  4. 6. projectile used to attack a target, coming from aircrafts, or submarines
  5. 7. operating in the air
  6. 8. a person operating the controls of an aircraft
  7. 10. Large body of salt water, covering most of earth's surface