Practically every major battle in every major war has been re-done at some point. The ancient Romans — big warriors, those Romans — upon returning home recreated battles in the amphitheaters for the enjoyment of the people. Before the American Civil War was even over, soldiers were calling do-overs and staging battles for practice — they called them "sham battles" — often in front of curious civilians.

These days, battle reenactments have become huge business all over the world, a multimillion dollar industry, according to The New York Times. Every year, tens of thousands of "re-enactors," dressed in period garb and toting period firearms and swords, wage these faux fights in front of thousands of fans as a way to honor long-ago sacrifices and to act as a sort of "living history" exhibition.

Here are five notable historic battles that you can still see today — sort of.

D-Day

Re-enactors 'storm' Gold Beach from a Royal Marine Landing craft during the 70th anniversary of the D-Day landingsRe-enactors 'storm' Gold Beach from a Royal Marine Landing craft during the 70th anniversary of the D-Day landings on June 6, 2014. (Photo: Christopher Furlong/Getty Images)

When was it?

June 6, 1944, in Normandy, France

What war?

World War II

Who fought?

Allied troops led by the United States and the United Kingdom versus Nazi Germany

Who won?

The Allies, despite heavy casualties, established a foothold in Europe that was critical in pushing back the Nazis, eventually leading to their defeat and the end of the war in Europe.

And these days … ?

In France, the 75th anniversary of the Battle of Normandy was marked by ceremonies and memorials, parades, tours of the landing zones and reenactment of parachute drops. There's also a stateside version: D-Day Conneaut, which bills itself as the largest annual D-Day reenactment in the U.S. It’s held every year in Conneaut Township Park, in Conneaut, Ohio, along Lake Erie in the northeastern part of the state. Around 1,200 re-enactors from the U.S. and Canada take part in the detailed show, which includes the storming of a 250-yard beach at the park that, it is said, "closely resembles" Omaha Beach.

The Battle of Gettysburg

Re-enactors line up to 'fight' the Battle of Gettysburg in 2013Re-enactors line up to 'fight' the Battle of Gettysburg in 2013. (Photo: S Pakhrin/Flickr)

When was it?

July 1-3, 1863, in and around the town of Gettysburg, in southern Pennsylvania

What war?

The American Civil War

Who fought?

Union soldiers versus Confederate troops

Who won?

The Union, in what is considered the bloodiest battle of the war

And these days … ?

More than 51,000 American soldiers were either killed, wounded or went missing at Gettysburg in what is still the biggest battle ever fought in North America. The Gettysburg Anniversary Committee organizes the reenactment each year. It takes place on farmland just southwest of the original battlefield and includes field demonstrations, a living history village, civil war merchants and military camps.

The Battle of Bunker Hill

Commemorative Exercises for the 241st anniversary of the Battle of Bunker Hill Commemorative exercises for the anniversary of the Battle of Bunker Hill. (Photo: Boston NHP/Flickr)

When was it?

June 17, 1775, on two hills outside of Boston, Bunker Hill and Breed's Hill

What war?

The American Revolutionary War

Who fought?

British colonial forces versus British troops

Who won?

British troops, though they took heavy casualties, which emboldened the inexperienced colonists throughout the rest of the war

And these days … ?

Occasionally, there are reenactments of the famous battle — like the one held commemorating the 240th anniversary in 2015. You can catch the Bunker Hill Day Parade, a tradition since 1786.

The Battle of the Alamo

Re-enactors fire a cannon in front of the Alamo as tourists watchRe-enactors fire a cannon in front of the Alamo as tourists watch. (Photo: NeonLight/Shutterstock)

When was it?

Feb. 23-March 6, 1836, at Alamo Mission in what is now San Antonio, Texas

What war?

The Texas Revolution

Who fought?

Mexican troops under Santa Anna versus Texians (English speaking settlers from the Mexican province of Texas)

Who won?

Santa Anna and the Mexicans killed all the defenders — as many as 257 of them — including legendary fighters Sam Bowie and Davy Crockett

And these days … ?

The Alamo is the No. 1 tourist destination in the state. Visitors can take a one-hour tour that retraces the battle. As far as true reenactments go, that's trickier. The Alamo stands now in the middle of Alamo Plaza, steps from San Antonio's famed Riverwalk, and is filled with tourists almost every day. The San Antonio Living History Association conducts some reenactments, complete with armed Mexicans and Texans, around the anniversary of the battle. But you have to use your imagination to envision what it must have been like 200 years ago.

The Battle of Waterloo

Reenactors stage a skirmish during the commemoration of the Battle of WaterlooReenactors stage a skirmish during the commemoration of the Battle of Waterloo (Photo: Carl Court /Getty Images)

When was it?

June 18, 1815, near Waterloo in what is now Belgium

What war?

The Waterloo Campaign during the War of the Seventh Coalition

Who fought?

The French army, led by Emperor Napoleon, versus the Seventh Coalition, comprised of Austria, the United Kingdom, Prussia, Russia and, eventually, most of the rest of Europe.

Who won?

The Seventh Coalition, handily, forcing Napoleon into exile for the last time. The Battle of Waterloo was considered crucial in the formation of modern Europe.

And these days … ?

The bicentennial of the battle was held in late June of 2015, presented by ASBL Bataille de Waterloo 1815, a non-profit group, and included 5,000 re-enactors, some 300 horses and 100 cannons. It's an economic stalwart in that part of Belgium, where tourists visit the battlefield. "The Battlefield … soon became a place of remembrance and pilgrimage for men of all of the nations that had torn each other apart on this little corner of ground in Walloon Brabant," says the ASBL in a press release. "It became such an important destination that this is where the tour operators saw their beginnings, bringing visitors to the site by carriage from London, Ostend, Ghent and Brussels."

This story originally appeared in August 2015 and has been updated with new information.

5 historic battles you can witness in the present
Here are five notable historic battles that you can still see today — sort of.