NCR dogtag

Dogtags are a miscellaneous item in Fallout: New Vegas. They can be found on the NCR soldiers, similar to the holotags found on the Brotherhood of Steel members in Fallout 3. Unlike holotags, however, generic soldiers will always have their tags, rather than the tag spawning upon death.

Uses
You can get a recipe for a weapon called the dog tag fist from Private Halford after rescuing him (or looting his body) during an unmarked quest at a cave in Guardian Peak. The dog tag fist requires 20 NCR dog tags and 30 Repair to create.

Quartermaster Mayes at Camp Forlorn Hope will accept NCR dog tags. His tent can be found to the right of the Command Tent, he will reward you with 2 caps and NCR Fame per tag.

Speaking with Aurelius of Phoenix at Cottonwood Cove gives you the opportunity to turn in dog tags for a reward of 10 caps each or ammunition and supplies when you have barter of 35 and Caesar's Legion Fame.

Characteristics

 * Appear as run-of-the-mill dogtags.
 * The tags are weightless and count as quest items, making them impossible to remove without console commands.

Locations

 * Dog tags can be found on the bodies of the respawning soldiers who fight fiends south of Camp McCarran. Areas near The Basincreek Building and Allied Technologies offices are common fight locations. This can be done infinite times with no reputation loss if you allow the soldiers to die in battle.
 * 11 dog tags can be found on the fallen soldiers in the Camp Guardian caves.
 * A further tag may be taken from the sole survivor in the aforementioned caves. The player will not receive a karma penalty for murdering him, nor will they receive a relationship penalty with the NCR.
 * A dog tag may be found on a dead NCR soldier on the coyote infested hills due north-west of the California Sunset Drive-in, near to Primm.
 * Like many corpses on the Gamebryo engine, it is possible for this dead soldier to be found alive. If the player is using the PC, they can re-kill the soldier through the game console in order loot his dog tag without penalty; PS3 and Xbox users will be forced to look elsewhere, however.
 * 4 dog tags can be found on the dead NCR soldiers in the Nipton Hotel, located to the west of the Nipton town hall.
 * These 4 corpses will de-spawn if the player has entered the Nipton Hotel before.
 * Littered between Camp Forlorn Hope and Nelson are a number of fallen NCR soldiers, each of which have been booby trapped by Legion soldiers. These fallen soldiers are still considered living, and killing them will result in the usual associated penalties; however, due to the nature of the booby traps near their corpses, it is possible for the player to set off the mines, killing the dying soldiers and giving the player a lootable corpse.
 * It is possible to pickpocket dog tags from live troopers. Pickpocketing a soldier's dog tag will result in the usual karma loss.
 * Over a dozen NCR soldiers can be found inside Camp McCarran, giving the player ample pickpocket targets.
 * The Strip plays host to many NCR soldiers. This area can also provide the player with a number of soldiers to pickpocket.
 * Players with the Mister Sandman perk can kill troopers in their sleep.
 * In Nelson, skirmishes between the Legion and the NCR are a common occurrence. The player may loot the bodies of NCR troopers who have fallen to the Legion soldiers without penalty. Alternatively, the player can help the Legion to kill the NCR soldiers and then loot their corpses.
 * You can also call in trooper support and get the soldier killed and loot them.

Bugs

 * It is sometimes possible for known corpses carrying NCR dog tags to be found alive. This is an issue with the Gamebryo engine. If the player attempts to kill the non-player character who has been found alive, it will result in the usual karma/reputation penalties as with killing any other non-player character.
 * Skirmishes between the Legion and NCR soldiers between Camp Forlorn Hope and Nelson may not occur, forcing the player to look elsewhere for dog tags.
 * The boobytrapped corpses littered between Camp Forlorn Hope and Nelson may not spawn.