Related Clues:

• Company identifiers
• Army ID
• GI ID
• GIs' IDs
• Private identification
• Canine IDs
• IDs of a sort
• Private labels?
• Soldier IDs
• Some military IDs
• GI IDs
• Military IDs ... or what 17-, 23-, 51- and 61-Across have
• Soldiers' IDs
• Identifying neckwear
• Metallic IDs