The Fighting Devil Dogs (1938)

In Singapore, two US Marine Lieutenants, Tom Grayson and Frank Corby, discover the threat of a new villain called The Lightning, a masked villain who uses a powerful lightning based weapon in his bid for world conquest. Unfortunately, the battle becomes personal when The Lightning annihilates the officers' unit, and later kills Lt. Grayson's father as he was helping the investigation of the weapon. Now, those young marines have dedicated themselves to stopping The Lightning and bringing him to justice.