Crimefighters #6

The Iron Ace confronts enemy forces and uses his sword for battle, declaring he will put it to new use. After the Iron Ace disappears, Captain Britain and another pilot pursue him, discovering that the villain has stolen new aircraft technology and is working with Nazi forces. Sky Wolf, equipped with special glasses that penetrate invisions, spots the enemy's hidden flying fortress over England and launches an attack. A young girl named Sylvia becomes caught in the conflict when giant bats attack a British plane factory at night, forcing her and workers to flee as the creatures wreak havoc, with the mysterious Black Angel threatening to bring the war to England using these aerial weapons.