Featured photojournalist: Michael Reynolds

Civil war re-enactors portraying Union soldiers march during the Cascades Civil War Muster in Jackson, Michigan Photograph: Michael Reynolds/EPA

A re-enactor carries water with a child during the Cascades Civil War Muster in Jackson, Michigan Photograph: Michael Reynolds/EPA

The Antietam National Park Service volunteer group portrays Battery B, 4th US artillery, firing a 12-pound Napoleon cannon during a living history demonstration at Antietam National Battlefield in Sharpsburg, Maryland Photograph: Michael Reynolds/EPA

Women make quilts at the JEB Stuart encampment and living history re-enactment at Laurel Hill in Ararat, Virginia Photograph: Michael Reynolds/EPA

Civil war re-enactors portraying pro-South troops and militia step over a 'corpse' during the 150th anniversary re-enactment of the Battle of Lexington Photograph: Michael Reynolds/EPA

A civil war re-enactor in period clothing brushes her hair at camp during the Cascades Civil War Muster in Jackson, Michigan Photograph: Michael Reynolds/EPA

A civil war re-enactor wearing period clothing stands in front of the flag of the 102nd US Colored Troops, Michigan's first and only black regiment. The regiment was formed in Detroit and included some escaped slaves Photograph: Michael Reynolds/EPA

Civil war re-enactors portraying Union cavalry (facing camera) engage with Confederate cavalry during the 150th anniversary re-enactment of the Battle of Lexington, in Missouri Photograph: Michael Reynolds/EPA

A civil war re-enactor portraying a Confederate artillery officer rides through camp during the 150th anniversary re-enactment of the Battle of Lexington Photograph: Michael Reynolds/EPA

Children of civil war re-enactors wear period clothing during the Cascades Civil War Muster in Jackson, Michigan. The Muster holds the re-enactment of the Battle of Bethel, Virginia, which was one of the first land battles in the war Photograph: Michael Reynolds/EPA

A civil war re-enactor portraying the wife of a Union soldier walks through camp during the JEB Stuart encampment and living history re-enactment at Laurel Hill in Ararat, Virginia Photograph: Michael Reynolds/EPA

Civil war re-enactors dance during a mock military ball at the Cascades Civil War Muster in Jackson, Michigan Photograph: Michael Reynolds/EPA

Civil war re-enactors portraying Confederate soldiers march to battle during the Cascades Civil War Muster in Jackson, Michigan Photograph: Michael Reynolds/EPA

Clouds of smoke surround civil war re-enactors portraying Confederate artillery during the 150th anniversary re-enactment of the Battle of Lexington Photograph: Michael Reynolds/EPA

Headlights of passing vehicles beside thousands of lit candles during the memorial illumination at Antietam National Battlefield in Sharpsburg, Maryland. The Battle of Antietam was the bloodiest one-day battle in American history. Of nearly 100,000 soldiers engaged in the battle, about 23,000 were killed, wounded or missing Photograph: Michael Reynolds/EPA