History versus Theological Intent

that's what my essay's on. i've done 8hrs of reading thus far, still not sure what my question is asking.*

but i keep coming back to Spike Milligan's introduction to his ground-breaking memoir, Adolf Hitler: My Part in His Downfall.

“Of the events of the war, I have not ventured to speak from any chance information, nor according to any notion of my own. I have described nothing but what I saw myself, or learned from others of whom I have made the most careful and particular inquiry”.
          Thucydides, Peloponnesian War.

“I’ve just jazzed mine up a little”.
          Spike Milligan, WWII.

so is that what the evangelists have done? just jazzed it up a little?
are they historical fictions? are they based on a true story?

does it matter - it's all about faith, the Christ we apprehend by faith. but what's the point of a faith approachable only in a mythical fable?

* i mean, i do know what it's asking, the question is: The historicity of the synoptic gospels is compromised by their theological intent. discuss. i just don't know what it's asking. that's all.