“Judith, for example, says that Nebuchadnezzer is King of the Assyrians, which is wrong, amongst many other historical and geographical errors.”
The Babylonian Empire subsumed the Assyrian Empire under Nebuchadnezzar, so it’s not a stretch to say that he was King of the Assyrians. He was king over all that he surveyed, including Assyria.
“The Babylonian Empire subsumed the Assyrian Empire under Nebuchadnezzar, so it’s not a stretch to say that he was King of the Assyrians.”
Judith asserts that Nebuchadnezzar reigned in Nineveh, which is the Assyrian capital, as opposed to Babylon, though he ruled over many various tribes and cities. And that is just one of the many historical and geographical problems of Judith, hence why the RCC does not regard Judith as actually historical.