NEW YORK (FOX 5 NEWS) - Historian and bestselling author Patrick O'Donnell says 400 American soldiers from Maryland -- called the Maryland 400 -- fought at the Battle of Brooklyn in the Revolutionary War. It was August 1776, a month after the adoption of the Declaration of Independence. American soldiers fought British soldiers on Battle Hill. It is now home to Green-Wood Cemetery, although none of the soldiers are buried here.
The Maryland 400 took an epic stand against thousands of British soldiers at the Old Stone House in Brooklyn. They sacrificed themselves so that the vast majority of George Washington's army could make it safely back to their forts in Brooklyn Heights.
The Old Stone House Museum was built, in part, with stones from the original building. O'Donnell's book "Washington's Immortals" tells the story.
More than 250 of the Maryland 400 were either killed or captured. Where they are buried remains a mystery to this day. It is believed to be somewhere in the area of Third Avenue and Ninth Street in Brooklyn. Two signs outside the American Legion hall memorialize them.
O'Donnell is hoping an effort will be made to find the exact location of the mass grave and erect a monument to honor America's first band of brothers.