Although we do not attend "Abraham Lincoln: Vampire Hunter" in search of a history lesson, there's one glitch I cannot overlook. In the first day of fighting at Gettysburg, the Union sustains a defeat so crushing that Lincoln is tempted to surrender. This is because the Confederate troops, all vampires, are invulnerable to lead bullets, cannon fire and steel blades, and have an alarming way of disappearing and rematerializing. Over breakfast, Lincoln confides his despair to his wife and says conventional weapons are of no more use against them than — why — than this fork! As he stares at it, he realizes it is silver, and vampires can be killed by silver weapons, as he has proved with his axe-twirling.

Now try not to focus too much on the timeline. After his realization, Lincoln mobilizes all resources to gather wagonloads of silver in Washington, melt it, and manufacture silver bayonets, bullets and cannon balls. Then we see him, Johnson and Speed on board a weapons train en route to Gettysburg. It is night again, so apparently all of this took less than a day.

Never mind. What comes now is a genuinely thrilling action sequence in which the vampires battle with Lincoln and his friends on top of the speeding train, which hurtles toward a high wooden bridge that has been set alight by the sinister Vadoma (pronounced "Vadooma," I think). This sequence is preposterous and yet exciting, using skillful editing and special effects. Somehow Benjamin Walker and his co-stars here are even convincing — well, as convincing as such goofiness could possibly be.

"Abraham Lincoln: Vampire Hunter" has nothing useful to observe about Abraham Lincoln, slavery, the Civil War or much of anything else. Blink and you may miss the detail that Harriet Tubman's Underground Railway essentially won the war for the North. But the film doesn't promise insights on such subjects. What it achieves is a surprisingly good job of doing justice to its title, and treating Lincoln with as much gravity as we can expect, under the circumstances.