There are
many things I wonder about me, but moving on. . .
'Cause (generally speaking), JRRT is the author of all things
Middle-earth. And more specifically, when one asks about the
battles of
Beleriand (as you often do),
Quenta Silmarillion is the natural place to go, or at least to start with.
And I'd quote any such non-Quenta Silmarillion texts that reveal
Celeborn fighting in any of the battles you raised in this thread, but I can't recall any!
And if by "may" you mean "might have" then, for myself, I don't find this very compelling. Maybe
Celeborn was fishing when
Feanor showed up, and he fought the orks alongside the Feanoreans.
Ah, but there is no
certainty about this. And I'm not surprised that you'd refer to the GA version, since the
Quenta Silmarillion version states that only Mablung and Beleg went to this war -- as with the Bragollach, you're relying upon possibility despite no evidence to indeed make it
certain.
The Rings of Power show is basically meaningless to me with respect to discussions of
Tolkien's history of Middle-earth. In my opinion, one might as well point to anyone's fan fiction where Celeborn certainly fights in the
War of Wrath, and claim that as a source!
John Ronald Reuel Tolkien is the source. English guy. Likes inventing languages. That guy
Maybe 'cause people like depicting Tolkien's
Elves with
swords?
Anywho, Tolkien himself did write that Telporno the Telerin
Elf of
Aman fought heroically in defense of Swanhaven, but not only does this contradict Tolkien-published text, in this iteration
Galadriel and Celeborn sailed to Middle-earth, were met with joy, but. . .
" . . . in the years after they [Galadriel and Celeborn]
did not join in the war against Angband, which they judged to be hopeless under the ban of the Valar and without their aid; and their counsel was to withdraw from Beleriand . . ."
So in this last Tolkienian version of Celeborn and Galadriel's history, they both did not join in the war against Angband, and both leave Beleriand before the end of the
First Age.
Despite that this version is the last one that JRRT ever put to paper, I personally do not accept it.
As I say, I put
Tolkien-published text above all (in which Celeborn was
Sindarin, not Telerin),
but
the point here is -- here we have Tolkien himself "removing" [cough] Celeborn from these battles, which I do
not think needs to be interpreted as Celeborn not being a great warrior at need.
In shorter: not fighting in any of these
wars (as in this late iteration) doesn't necessarily mean Celeborn isn't a notable, or able warrior -- it means that he did not fight in these wars!
I'd say that many, many, many Elves in Tolkien's world could look awesomey in this regard, but that doesn't mean an arguable paragon of martial prowess like
Beleg (for one random example) necessarily fought in a given, specific war.
🐾