For sure correct until 1945 (wrong side of the fence,,,) but I would presume it is in 'honor' of more than anything else. Maybe an initiative of a unit or a few divers. My watch has been like this since the end of the 80's at least (documented) and since you would get change from 2K, I doubt anyone would go into the trouble. The other number I know is like this since since the 60's.