This sits outside the game itself, which is exactly why it is hard to find a straight answer about it.

Short answer

The short version: it is canon where the developers say it is, and enjoyable regardless.

Assets circulated online are often ripped rather than released, which affects what you can legally do with them. Official art books contain material that never appears in the game itself. Where something depends on your platform or region, that is called out rather than glossed over.

What exists officially

Licensed soundtracks are the most likely part to be missing from a re-release. Canon status is decided by the developers rather than by the adaptation's writers. Call of Duty is not shy about hiding useful information two menus deep, so some of this is simply knowing where to look. Release order and chronological order are different, and both have their advocates.

Adaptations take liberties, and the interesting ones take them deliberately. The developers have changed their mind about this at least once, which explains the older advice. Fan work is frequently better than official work and is not the same thing.

Where it fits with the game

Screenshots age faster than text, which is why this describes rather than shows. It helps to understand why a step exists, because then you can adapt it when your situation is slightly different. Most of the disagreement you will find online is two people describing different builds.

  • Expect licensed music to be missing from re-releases.
  • Credit fan artists if you reuse their work.
  • Stop and reassess after two failed attempts rather than repeating the third.
  • Look for an official assets page before downloading anything.

Where to find it legitimately

A single check up front replaces a lot of guessing later. There is usually a fast way and a reliable way, and it is worth knowing which one you are choosing. What follows assumes you are on a current install and have not modified it. Do the cheap check before the expensive one — that ordering alone saves most of the frustration.

Half the pages on this topic were written for a build that no longer exists, which is why they stop matching what you see. If a step reads as obvious, do it anyway — the obvious ones are the ones people skip and then wonder about. If your result differs from what is described here, note what is different first rather than starting over.

What is fan-made

The short version is near the top on purpose; the reasoning is there if you want to know why. Nothing here assumes a particular playstyle beyond wanting the thing to work. Everything below is framed around the current state of Call of Duty rather than a launch-week impression.

If you are coming to this after a long break, the terminology has probably moved on. There is no hidden trick here that the game is keeping from you. Treat anything stated without a version number as provisional.

Whether it is worth your time

The community wisdom on this is roughly half right, and the half that is wrong costs the most time. Where two approaches both work, the one with fewer moving parts is the one to keep. The awkward part is rarely the step itself, it is knowing which step comes first.

Where people go wrong

  • Trusting a video thumbnail that promises a result the video never actually shows.
  • Skipping the prerequisite because it looked optional in someone else's summary.
  • Grinding a method that was patched months ago because a thread still ranks well.
  • Rushing the last step, which is usually the one with the actual requirement in it.

Call of Duty FAQ

Do I need it to understand the game?

No. It adds background rather than filling gaps the game leaves open.

Is this still accurate after the latest Call of Duty update?

The method is; individual numbers may not be. If a value on your screen differs, trust the screen and keep the sequence.

Is it canon?

Where the developers have said so, yes. Adaptations produced under licence are frequently their own continuity.

Where can I get it legally?

Publisher stores and licensed platforms carry all of it. Anything circulating as a free file is a rip.

Come back to the caveats list if it does not work first time — the answer is almost always in there.