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James Madison was the fourth President of the United States and a principal author of The Federalist Papers. Madison is considered by some to be the "Father of the Constitution."

Captain William Thomas Magruder was one of four graduates of the United States Military Academy to resign his commission in the U.S. Army and join the Confederate Army after fighting for the Union during the American Civil War.

Key facts about Captain William Thomas Magruder who was one of four graduates of the United States Military Academy to resign his commission in the U.S. Army and join the Confederate Army after fighting for the Union during the American Civil War.

A prominent Confederate officer, Major General William Mahone served in nearly all of the major campaigns and battles in the Eastern Theater of the American Civil War.

Key facts about Major General William Mahone, a prominent Confederate officer who served in nearly all of the major campaigns and battles in the Eastern Theater of the American Civil War.

Key facts about the Battle of Malvern Hill, also known as the Battle of Poindexter's Farm.

The Battle of Malvern Hill, also known as the Battle of Poindexter's Farm, was fought on July 1, 1862, in Henrico County, Virginia. It was the sixth and final engagement of the Seven Days Battles and the Peninsula Campaign.

The Battle of Manassas, also known as the Battle of Wapping Heights, was fought on July 23, 1863, in Warren County, Virginia. It was the last engagement of the Gettysburg Campaign.

The Battle of Manassas, also known as the Battle of Wapping Heights, was fought on July 23, 1863, in Warren County, Virginia. It was the last engagement of the Gettysburg Campaign.

Key facts about the Battle of Mansfield, also known as the Battle of Sabine Crossroads.

Fought on April 8, 1864, the Battle of Mansfield was the deciding engagement of the Red River Campaign, and it was the last major victory by a Confederate army during the American Civil War.

Key facts about the Marietta Operations during the Atlanta Campaign.

The Marietta Operations was a series of engagements between Union forces commanded by Major General William T. Sherman and Confederate forces commanded by General Joseph E. Johnston from June 9 - July 3, 1864 during the Atlanta Campaign of the American Civil War.

Francis Marion was an officer in the South Carolina Militia and Continental Army during the American Revolutionary War. He fought in the Battle of Sullivan's Island, waged guerilla warfare on Loyalist and British forces, and fought at the Battle of Eutaw Springs. After the war, he served in the South Carolina Assembly.

Key facts about the Battle of Marks' Mill (aka Action at Marks' Mills).

At the Battle of Marks' Mill (aka Action at Marks’ Mills), Confederate soldiers captured "a large number" of blacks and pro-Union Arkansans who they subsequently "inhumanly butchered."

John Marshall was a Founding Father, officer in the Continental Army during the Revolutionary War, congressional representative from Virginia, Secretary of State, and 4th Chief Justice of the U.S. Supreme Court.

Key facts about the American Civil War Maryland Campaign.

Also known as the Antietam Campaign, the Maryland Campaign was an ill-fated Confederate attempt to take the American Civil War to Northern soil in 1862. The failure of the invasion provided the impetus for President Abraham Lincoln to issue his Preliminary Emancipation Proclamation.

The Massachusetts Government Act was one of five laws enacted by the British Parliament in 1774 in response to the Boston Tea Party. Collectively, the acts are known as the Coercive Acts, or the Intolerable Acts.