I have now actually seen
Timeline on DVD, and I just have to take back every tentative endorsement I gave it based on the book and previews. It was a great waste of time, and it really
was embarrassing. I'll accept flaming arrows and night-time siege warfare in LotR, because it's a fantasy, but not in something that pretends to be "realistic."
Actually, the fire arrows and flaming trebuchet bombs were possible, but they would have used these things during the daytime, and then called battle to a halt at night. E.g (from 14th c. chronicle):
"Sir Thomas Trivet had quarters with many others in the town of Bourbourg, and fortified the town with a fence and ditch. Thereupon the king of France suddenly appeared, with his royal power, and came to Bourbourg and pitched his camp to besiege it. And he shot fire into the town, and set it ablaze. While the town was burning he threw his force against the defences
until the evening, but being well beaten the French then withdrew." [emphasis added]
I found one account of nighttime fighting--"skirmishes" with townsfolk attempting to escape from a besieged city in the middle of the night--obviously nothing actually planned.
What made both DH (who was even more bored than I was) and me laugh out loud was the "night arrows!"--non-flaming arrows, which were evidently supposed to be all stealthy and kill more people than the flaming arrows? Because they could theoretically see the flaming arrows and get out of the way?

Right. And they're supposed to fight with swords, and shields, and manage their horses AND carry torches?
And that's all before the amazing ability of the 20th c. folk to understand Middle English and Old French, and vice versa...the book explains this somehow--hypnogogy, or something?
Nope. Sorry.
Timeline goes on the "Worst Medieval Movies of All Time" list.
And to top it all off, the "making of" documentaries are boring. "Well, we're here in the woods, and we've had a really good time together. Billy and Frances are just the best...There's our castle over there..." and an amount of time that only a true film-making-maven could appreciate devoted to the glueing and taping together of a photo-collage to be used in preparing to shoot a battle scene. Impressive--but boring to watch.