When it's steel vs. wood, steel should always win that's what Nutn says - LOL!)... And I know Ka-Bar/Becker has great customer service and warranty, and I wouldn't be surprised if they simply replaced it for you. Please let us know how it turns out.
Btw, it probably wouldn't hurt if you mentioned that "the guys on BladeForums" recommended that I call - that way they know you'll likely be posting your CS experience....
my personal opinion is that : you should never have to baton, if you plan ahead, or think about it.
Sir Nessmuk never batoned. he was lazy. he used other techniques.
in the wild, one SHOULD be able to find materials. it requires little extra work.
that said, Becker and KaBar sustain that batoning is warranteed.
there are cases where wood is stronger than metal. there are cases where wood will break metal. various kinds of trees can even be harder than steel due to various compositions.
and again, all that said.. the way this knife broke suggests 'bad steel'... or unbelievably severe abuse.
osage orange is "like metal". batoning that through cold, knot prone wood? i'd expect breakage in the blade edge, esp chips.
the HANDLE broke? wow. bad steel, or VERY VERY VERY bad technique. one says "warranty replacement". the other says "don't do that. ever."
KaBar will want to see this.
send them the shards of narsil :>