
1) Board game 2) Hush-hush handles 3) Indicators of intelligence 4) Project handles
Found on
https://www.crosswordclues.com/clue/codenames

German industrial, NATO codenames for Electronics & Electro-optical, NATO codenames for AAM systems, NATO codenames for ASM systems, NATO codenames for ABM systems, NATO codenames for Fighters, NATO codenames for FROG, NATO codenames for SAM systems, NATO codenames for SA-N systems, NATO codenames for Soviet Submarines
Found on
https://www.encyclo.co.uk/local/20785
No exact match found.