The pack's position. Page 3 carries the banner UNIQUE: WAR DOGS directly above the HUNTING WARPACK heading, and the detachment rule itself ends with the sentence forbidding a second WAR DOGS detachment. Both are unambiguous and both are first-party.
The Munitorum Field Manual's position. Version 1.3 shows no active unique tag on this card and instead carries two annotation bands: UPDATED and UNIQUE TAG REMOVED. It shows the same pair on Houndpack Lance.
Our stance. We assert the tag, because the pack prints it in two places and is a current-day document. We do not assert the restriction, because the newer official document appears to have removed the thing the restriction depends on. Whether Hunting Warpack plus Houndpack Lance is legal is unresolved, and we do not claim to know.
Why this matters concretely. Hunting Warpack is 1 DP and Houndpack Lance is 2 DP. One plus two is 3, exactly a Strike Force budget, and both are War Dog detachments, so the arithmetic invites precisely the army whose legality is in question. It has its own warning page.
The mirror does not settle it. A community rules mirror keeps the pack's WAR DOGS sentence in this detachment's rule, but it is one version behind the Munitorum Field Manual for this faction, so it cannot yet reflect the removal. It is agreeing with the older document rather than casting a second vote.
What is unambiguously legal. Pairing this detachment with any Chaos Knights detachment other than Houndpack Lance, because no other one carries any tag under either document. Confirm in the Warhammer 40,000 app before a tournament.