Most obscure ACW reference on TV

The family and I were watching Maverick tonight when in "The Savage Hills," Bart Maverick mentioned that he and Bret Maverick had been "Galvanized Yankees."

I gasped. Wouldn't you?

Wife asked why.

"Most esoteric Civil War reference I have ever heard of in mass media," I said.

Would you agree? Can you imagine a print media reference to Galvanized Yankees?

I'd like to thank the television industry of 1957 for a personally gratifying "wow" factor.