So, what i mean by the title is how to pronounce letters used in headcodes such as 1Y56, but how to do i pronounce them? Feel free to put ones you know, or every single one of them.
Like this perhaps, telegraph codes: http://www.railwaycodes.org.uk/features/telegraph.shtm#official I highly doubt NATO codes were in use pre-WW2 more on codes: http://igg.org.uk/rail/3-sigs/bellhead.htm