Women dressed in Civil War-era clothing brave the heat to watch the reenactment of the First Battle of Manassas (Bull Run) in Manassas, Virginia, USA, 23 July 2011. The reenactment, with over 8,000 re-enactors, is part of the 150th Anniversary Commemoration of the first major land battle in the American Civil War, which took place in Manassas, 21 July 1861. The original battle happened when about 35,000 Union troops marched from Washington and clashed with a Confederate force of 20,000, which resulted in a Confederate victory. Re-enactors have had to endure a brutal heat wave with some wearing wool uniforms, as temperatures here are expected to reach 102 Fahrenheit (38.88 Celsius), 23 July 2011. EPA/MICHAEL REYNOLDS
Re-enactors portraying Confederate soldiers and militia fire on the battlefield during the reenactment of the First Battle of Manassas (Bull Run) in Manassas, Virginia, USA, 23 July 2011. The reenactment, with over 8,000 re-enactors, is part of the 150th Anniversary Commemoration of the first major land battle in the American Civil War, which took place in Manassas, 21 July 1861. The original battle happened when about 35,000 Union troops marched from Washington and clashed with a Confederate force of 20,000, which resulted in a Confederate victory. Re-enactors have had to endure a brutal heat wave with some wearing wool uniforms, as temperatures here are expected to reach 102 Fahrenheit (38.88 Celsius), 23 July 2011. EPA/MICHAEL REYNOLDS
Re-enactors portraying Confederate soldiers and militia prepare to engage on the battlefield during the reenactment of the First Battle of Manassas (Bull Run) in Manassas, Virginia, USA, 23 July 2011. The reenactment, with over 8,000 re-enactors, is part of the 150th Anniversary Commemoration of the first major land battle in the American Civil War, which took place in Manassas, 21 July 1861. The original battle happened when about 35,000 Union troops marched from Washington and clashed with a Confederate force of 20,000, which resulted in a Confederate victory. Re-enactors have had to endure a brutal heat wave with some wearing wool uniforms, as temperatures here are expected to reach 102 Fahrenheit (38.88 Celsius), 23 July 2011. EPA/MICHAEL REYNOLDS
A re-enactor portraying a Union soldier sits at his campsite before the reenactment of the First Battle of Manassas (Bull Run) in Manassas, Virginia, USA, 23 July 2011. The reenactment, with over 8,000 re-enactors, is part of the 150th Anniversary Commemoration of the first major land battle in the American Civil War, which took place in Manassas, 21 July 1861. The original battle happened when about 35,000 Union troops marched from Washington and clashed with a Confederate force of 20,000, which resulted in a Confederate victory. Re-enactors have had to endure a brutal heat wave with some wearing wool uniforms, as temperatures here are expected to reach 102 Fahrenheit (38.88 Celsius), 23 July 2011. EPA/MICHAEL REYNOLDS
A re-enactor portraying a Confederate soldier (C) drinks water from a flask to stay cool during the heat, before the reenactment of the First Battle of Manassas (Bull Run) in Manassas, Virginia, USA, 23 July 2011. The reenactment, with over 8,000 re-enactors, is part of the 150th Anniversary Commemoration of the first major land battle in the American Civil War, which took place in Manassas, 21 July 1861. The original battle happened when about 35,000 Union troops marched from Washington and clashed with a Confederate force of 20,000, which resulted in a Confederate victory. Re-enactors have had to endure a brutal heat wave with some wearing wool uniforms, as temperatures here are expected to reach 102 Fahrenheit (38.88 Celsius), 23 July 2011. EPA/MICHAEL REYNOLDS
Re-enactors portraying Unions soldiers march on the battlefield during the reenactment of the First Battle of Manassas (Bull Run) in Manassas, Virginia, USA, 23 July 2011. The reenactment, with over 8,000 re-enactors, is part of the 150th Anniversary Commemoration of the first major land battle in the American Civil War, which took place in Manassas, 21 July 1861. The original battle happened when about 35,000 Union troops marched from Washington and clashed with a Confederate force of 20,000, which resulted in a Confederate victory. Re-enactors have had to endure a brutal heat wave with some wearing wool uniforms, as temperatures here are expected to reach 102 Fahrenheit (38.88 Celsius), 23 July 2011. EPA/MICHAEL REYNOLDS
Re-enactors portraying Confederate soldiers and militia march on the battlefield during the reenactment of the First Battle of Manassas (Bull Run) in Manassas, Virginia, USA, 23 July 2011. The reenactment, with over 8,000 re-enactors, is part of the 150th Anniversary Commemoration of the first major land battle in the American Civil War, which took place in Manassas, 21 July 1861. The original battle happened when about 35,000 Union troops marched from Washington and clashed with a Confederate force of 20,000, which resulted in a Confederate victory. Re-enactors have had to endure a brutal heat wave with some wearing wool uniforms, as temperatures here are expected to reach 102 Fahrenheit (38.88 Celsius), 23 July 2011. EPA/MICHAEL REYNOLDS
Re-enactors portraying Union cavalry ride during the reenactment of the First Battle of Manassas (Bull Run) in Manassas, Virginia, USA, 23 July 2011. The reenactment, with over 8,000 re-enactors, is part of the 150th Anniversary Commemoration of the first major land battle in the American Civil War, which took place in Manassas, 21 July 1861. The original battle happened when about 35,000 Union troops marched from Washington and clashed with a Confederate force of 20,000, which resulted in a Confederate victory. Re-enactors have had to endure a brutal heat wave with some wearing wool uniforms, as temperatures here are expected to reach 102 Fahrenheit (38.88 Celsius), 23 July 2011. EPA/MICHAEL REYNOLDS
Re-enactors portraying Union cavalry ride during the reenactment of the First Battle of Manassas (Bull Run) in Manassas, Virginia, USA, 23 July 2011. The reenactment, with over 8,000 re-enactors, is part of the 150th Anniversary Commemoration of the first major land battle in the American Civil War, which took place in Manassas, 21 July 1861. The original battle happened when about 35,000 Union troops marched from Washington and clashed with a Confederate force of 20,000, which resulted in a Confederate victory. Re-enactors have had to endure a brutal heat wave with some wearing wool uniforms, as temperatures here are expected to reach 102 Fahrenheit (38.88 Celsius), 23 July 2011. EPA/MICHAEL REYNOLDS
Re-enactors portraying Confederate soldiers suck on ice and drink water from a flask to escape the blistering heat during the reenactment of the First Battle of Manassas (Bull Run) in Manassas, Virginia, USA, 23 July 2011. The reenactment, with over 8,000 re-enactors, is part of the 150th Anniversary Commemoration of the first major land battle in the American Civil War, which took place in Manassas, 21 July 1861. The original battle happened when about 35,000 Union troops marched from Washington and clashed with a Confederate force of 20,000, which resulted in a Confederate victory. Re-enactors have had to endure a brutal heat wave with some wearing wool uniforms, as temperatures here are expected to reach 102 Fahrenheit (38.88 Celsius), 23 July 2011. EPA/MICHAEL REYNOLDS
Re-enactors portraying Union artillery fire cannons during the reenactment of the First Battle of Manassas (Bull Run) in Manassas, Virginia, USA, 23 July 2011. The reenactment, with over 8,000 re-enactors, is part of the 150th Anniversary Commemoration of the first major land battle in the American Civil War, which took place in Manassas, 21 July 1861. The original battle happened when about 35,000 Union troops marched from Washington and clashed with a Confederate force of 20,000, which resulted in a Confederate victory. Re-enactors have had to endure a brutal heat wave with some wearing wool uniforms, as temperatures here are expected to reach 102 Fahrenheit (38.88 Celsius), 23 July 2011. EPA/MICHAEL REYNOLDS
Re-enactors portraying Confederate soldiers and militia march on the battlefield during the reenactment of the First Battle of Manassas (Bull Run) in Manassas, Virginia, USA, 23 July 2011. The reenactment, with over 8,000 re-enactors, is part of the 150th Anniversary Commemoration of the first major land battle in the American Civil War, which took place in Manassas, 21 July 1861. The original battle happened when about 35,000 Union troops marched from Washington and clashed with a Confederate force of 20,000, which resulted in a Confederate victory. Re-enactors have had to endure a brutal heat wave with some wearing wool uniforms, as temperatures here are expected to reach 102 Fahrenheit (38.88 Celsius), 23 July 2011. EPA/MICHAEL REYNOLDS
Re-enactors portraying Confederate soldiers and militia march toward the battlefield during the reenactment of the First Battle of Manassas (Bull Run) in Manassas, Virginia, USA, 23 July 2011. The reenactment, with over 8,000 re-enactors, is part of the 150th Anniversary Commemoration of the first major land battle in the American Civil War, which took place in Manassas, 21 July 1861. The original battle happened when about 35,000 Union troops marched from Washington and clashed with a Confederate force of 20,000, which resulted in a Confederate victory. Re-enactors have had to endure a brutal heat wave with some wearing wool uniforms, as temperatures here are expected to reach 102 Fahrenheit (38.88 Celsius), 23 July 2011. EPA/MICHAEL REYNOLDS
Re-enactors portraying Union soldiers fire during the reenactment of the First Battle of Manassas (Bull Run) in Manassas, Virginia, USA, 23 July 2011. The reenactment, with over 8,000 re-enactors, is part of the 150th Anniversary Commemoration of the first major land battle in the American Civil War, which took place in Manassas, 21 July 1861. The original battle happened when about 35,000 Union troops marched from Washington and clashed with a Confederate force of 20,000, which resulted in a Confederate victory. Re-enactors have had to endure a brutal heat wave with some wearing wool uniforms, as temperatures here are expected to reach 102 Fahrenheit (38.88 Celsius), 23 July 2011. EPA/MICHAEL REYNOLDS
Smoke from rifles and cannons rises above the battlefield during the reenactment of the First Battle of Manassas (Bull Run) in Manassas, Virginia, USA, 23 July 2011. The reenactment, with over 8,000 re-enactors, is part of the 150th Anniversary Commemoration of the first major land battle in the American Civil War, which took place in Manassas, 21 July 1861. The original battle happened when about 35,000 Union troops marched from Washington and clashed with a Confederate force of 20,000, which resulted in a Confederate victory. Re-enactors have had to endure a brutal heat wave with some wearing wool uniforms, as temperatures here are expected to reach 102 Fahrenheit (38.88 Celsius), 23 July 2011. EPA/MICHAEL REYNOLDS
A re-enactor portraying a soldier of the Union's First Ohio Volunteer Infantry attempts to rest during the heat, before the reenactment of the First Battle of Manassas (Bull Run) in Manassas, Virginia, USA, 23 July 2011. The reenactment, with over 8,000 re-enactors, is part of the 150th Anniversary Commemoration of the first major land battle in the American Civil War, which took place in Manassas, 21 July 1861. The original battle happened when about 35,000 Union troops marched from Washington and clashed with a Confederate force of 20,000, which resulted in a Confederate victory. Re-enactors have had to endure a brutal heat wave with some wearing wool uniforms, as temperatures here are expected to reach 102 Fahrenheit (38.88 Celsius), 23 July 2011. EPA/MICHAEL REYNOLDS
Re-enactors portraying Union artillery fire cannons during the reenactment of the First Battle of Manassas (Bull Run) in Manassas, Virginia, USA, 23 July 2011. The reenactment, with over 8,000 re-enactors, is part of the 150th Anniversary Commemoration of the first major land battle in the American Civil War, which took place in Manassas, 21 July 1861. The original battle happened when about 35,000 Union troops marched from Washington and clashed with a Confederate force of 20,000, which resulted in a Confederate victory. Re-enactors have had to endure a brutal heat wave with some wearing wool uniforms, as temperatures here are expected to reach 102 Fahrenheit (38.88 Celsius), 23 July 2011. EPA/MICHAEL REYNOLDS
Re-enactors portraying Confederate soldiers try to stay cool beside rifles with bayonets, before the reenactment of the First Battle of Manassas (Bull Run) in Manassas, Virginia, USA, 23 July 2011. The reenactment, with over 8,000 re-enactors, is part of the 150th Anniversary Commemoration of the first major land battle in the American Civil War, which took place in Manassas, 21 July 1861. The original battle happened when about 35,000 Union troops marched from Washington and clashed with a Confederate force of 20,000, which resulted in a Confederate victory. Re-enactors have had to endure a brutal heat wave with some wearing wool uniforms, as temperatures here are expected to reach 102 Fahrenheit (38.88 Celsius), 23 July 2011. EPA/MICHAEL REYNOLDS
Re-enactors portraying Confederate soldiers and militia fire on the battlefield during the reenactment of the First Battle of Manassas (Bull Run) in Manassas, Virginia, USA, 23 July 2011. The reenactment, with over 8,000 re-enactors, is part of the 150th Anniversary Commemoration of the first major land battle in the American Civil War, which took place in Manassas, 21 July 1861. The original battle happened when about 35,000 Union troops marched from Washington and clashed with a Confederate force of 20,000, which resulted in a Confederate victory. Re-enactors have had to endure a brutal heat wave with some wearing wool uniforms, as temperatures here are expected to reach 102 Fahrenheit (38.88 Celsius), 23 July 2011. EPA/MICHAEL REYNOLDS
Re-enactors portraying the Union's Third Regular Infantry line up in formation at their campsite before the reenactment of the First Battle of Manassas (Bull Run) in Manassas, Virginia, USA, 23 July 2011. The reenactment, with over 8,000 re-enactors, is part of the 150th Anniversary Commemoration of the first major land battle in the American Civil War, which took place in Manassas, 21 July 1861. The original battle happened when about 35,000 Union troops marched from Washington and clashed with a Confederate force of 20,000, which resulted in a Confederate victory. Re-enactors have had to endure a brutal heat wave with some wearing wool uniforms, as temperatures here are expected to reach 102 Fahrenheit (38.88 Celsius), 23 July 2011. EPA/MICHAEL REYNOLDS
