Noisy you're misunderstanding what the term under a particular Commander means. That does not refer to the entire Fleet that the commander is apart of, it is specifically referring to the portion of the fleet which must be purchased when you purchase a boss.
Yup, I get that, it's the basis of the entire list structure. I'm not exactly sure what in my last post made it seem like I didn't? Side note, you keep referring to "purchasing" a commander, I assume by that you're referring to deciding how many re-rolls you want to buy for the free warlords? Because if not, then we're looking at VERY different lists.
Also, let's back up a step and clarify some terminology. Here's my reading of things and how I'll be using terms. All quotes from the Clanz list in green:
1) ALL ships in a Clanz list belong to a clan. This isn't explicitly laid out in the rules, but it is heavily implied, especially in the fluff section at the beginning of Musterin' da Clanz. What
is explicitly laid out is that it is possible for a ship to belong to a clan without paying for the upgrade
"being from a particular clan and being painted as such does not obligate the skwadron to take the benefits of being from a particular clan by paying the extra points for them." We'll say that each ship is "affiliated" with its chosen clan. The only mechanical thing that being affiliated does is give you the option to purchase a clan upgrade. Let's call the ones that haven't purchased an upgrade "basic" and those that have the clan upgrade "upgraded."
2) Now, let's look at the structure of the list, which is one Warlord per 500 points, each of whom controls a number of skwadrons. Let's call each group of Warlord+his skwadrons an "army"
3)
"A Warlord and his skwadrons may only be from one clan..." So here we see that Warlords
also have a clan (how else could the warlord's clan match his skwadrons'?). Not that it matters much from a rules perspective, except, as you mentioned, in campaigns, where you'd actually be
disallowed from moving a Warlord to a different army if it was of a different clan (a good example of a rule that's just sort of both slipped in and only heavily implied).
4) We now know that within an army all ships and the Warlord have the same affiliation (see quote from #3), but for now, they are all basic ships of a given clan. You then have the option to turn
any combination of basic skwadrons into upgraded skwadrons of the army's clan (using the appropriate clan upgrade for their affiliation), provided that you first pay the points, and second have the correct paint scheme for your affiliated clan.
...and that you must incorporate at least one tiddla Squadron of the same clan affiliation for each boss that you take who has a clan.
When you use the term "affiliation" here, are you using it in the same way that I am, or are you using it as I'm using the term "upgraded"? If the former, I agree, excepting the possibility of a Warlord not having a clan. If the latter, can you provide a quote from the rules to support this, as I don't see any requirements about matching clan upgrades. (
"A Warlord and his skwadrons may only be from one clan," doesn't apply, because
"Additionally, being from a particular clan and being painted as such does not obligate the skwadron to take the benefits of being from a particular clan by paying the extra points for them,")
Also, re: the use of re-rolls,
"A Warlord‟s re-rolls only count for the skwadrons under his command and not for the whole fleet."This^ is the only restriction on using re-rolls in the version I'm looking at (confirmed via Ctrl+F on "re-roll"); nowhere are clan affiliations mentioned.