The US has probably the worst cruise missiles of any major power. Still relying on 80s Harpoon and Tomahawks.
Harpoon sea story: There were several words in the data link to the missile that were marked “Don’t Care” in the Interface Control Document, so, we just put zero’s in them. It didn’t work. It turned out the missile “didn’t care” as long as there were a odd number of bits set in the word.