Hi, Rusty!
Well, yes, I have heard the expression "Time is the enemy."
But I have never, ever, come across the expression "How goes the enemy?" meaning "What time is it?"
Yes, I have found it in Chambers...... but I still think it is weird?
Have you ever heard anyone ask the time in that fashion?
I'd be expecting to look around, and then duck before he/she pulled the pin out of the hand grenade!
( Maybe I need to do another park survey....?)