On Sept. 2, Napoleon Bonaparte will mount his horse at the Battle of Borodino — just as he did 200 years earlier, when this field outside Moscow was the turning point of the French invasion of Russia.

Only this time, Napoleon will be an American. Mark Schneider, 44, has portrayed the swaggering Frenchman at Austerlitz, Erfurt, Waterloo and other reenactments. But nothing compares to Borodino, where he previously appeared in 2007. “The battle itself is like no other reenactment I’ve experienced before in its scale and intensity,” he said. “There’s music playing in the background, lots of cannons, lots of pyrotechnics, things blowing up. It’s quite epic.”

The Battle of Borodino took place on Sept. 7, 1812. The bloodiest day of the Napoleonic Wars, it involved 250,000 troops, over a quarter of whom would perish. Though Napoleon’s Grand Armée actually made some small advances, the battle proved to be the French campaign’s swan song: never again would Napoleon go on the offensive on Russian soil. For the bicentennial, the annual reenactment is expected to draw around 2,000 participants from Russia and abroad, as well as up to 200,000 spectators (including, rumor has it, Russian President Vladimir Putin).

When he isn’t being Napoleon, Schneider is a historical interpreter at Colonial Williamsburg. He stands 5’6,’’ just like the Emperor. He shares the same deep-set eyes, prominent nose and compact build. He even speaks the same Corsican-accented French.

He became interested in Napoleon as a child, thanks in part to his French mother. After he served in the military, his friend Ron Roberts asked him to join his French cavalry reenactment unit, the Seventh Hussars. Observing that Schneider “looked kinda like Napoleon,” Roberts suggested he try playing him. “The next thing I knew, I was Napoleon,” he said.

Schneider has since played Napoleon at countless historical reenactments and official events. He has also appeared in History Channel specials, including “Was Napoleon Murdered?” (Schneider’s verdict: no; he died of stomach cancer).

Schneider became involved with Borodino through organizer Alexander Valkovich, who played Tsar Alexander I to his Napoleon at a reenactment in Austria. “He’s remarkably similar to the great general, from Napoleon’s distinctive abrupt gestures and powerful stride to his manner of riding,” Valkovich said. “Just like the Emperor, he immediately sets the horse to a gallop.” “He really, really looks like him,” said Alexei Roshchin, another organizer.

To shape his portrayal, Schneider draws on biographies such as Vincent Cronin’s “Napoleon Bonaparte,” as well as memoirs by marshals, valets and family members. “[Napoleon] was very decisive, very intense at times,” Schneider said. “Especially in a battle situation, there was no waffling.”

At Borodino, however, Napoleon was not in his prime: he’d put on weight, and had lost some of his former vigor. “All that needs to be reflected,” Schneider said. On the day of the reenactment, Schneider will participate in a round of official ceremonies and proclamations before stepping aside for the battle itself, a tightly choreographed event requiring several days of rehearsal.

But the real highlight will be seeing friends from the reenactment circuit, whom he communicates with in French and English. “We’re really all part of a smaller community of enthusiasts of the Napoleonic period,” he said.

Schneider gets a considerably warmer reception in Russia than his predecessor, who retreated in December 1812 with only 27,000 of the 500,000 soldiers he arrived with. “I think the Russian people would not be as welcoming to Napoleon if he was truly here,” he said, “but to me they are very, very kind.”