Home > Term: countersign
countersign
A secret challenge and its reply.
- Μέρος του λόγου: noun
- Κλάδος/Τομέας: Στρατιωτικά
- Category: General military
- Company: U.S. DOD
0
Δημιουργός
- Lucrezia
- 100% positive feedback
A secret challenge and its reply.