I’ve sort of had it in my head for a few days now to look for the words they used to use in old WWII movies for each letter of the alphabet. You know, a = alpha, c = charlie, etc. Serendipity strikes again! This morning I found this link in the memepool mailing list: The NATO Phonetic Alphabet (Wikipedia).

Update: There’s another page with the same information, plus morse code!
2024-01-21: Broken links in this post have been removed and/or updated.