A Nazi agent chloroform Wonder Woman with his right hand. In the close-up it's his left hand.
Curt Lowens is credited as "S.S. General." But given his gray uniform, shoulder and collar straps, not to mention his command over Major Keller, this is incorrect. He is an Army Field Marshall.
No U-Boat or submarine would do a daytime extraction, especially near a large city, unless it was a dire emergency. Since this was a planed extraction, it would have been conducted at night under darkness.
After the U-boat emerges, the coastal road is seen. And a lamppost that is clearly from the Seventies. Here it is supposed to be 1942.
Wonder Woman is less familiar with the term "cavalry" than she should be, since the concept of mounted combat was well known in ancient Greece and the word itself has its roots in Latin, the language of ancient Rome.