Writing in the Washington Times, Joseph C. Goulden reviews bestselling military historian Patrick K. O’Donnell’s latest book, Washington’s Immortals: The Untold Story of an Elite Regiment Who Changed the Course of the Revolution.

As a military historian, Patrick O’Donnell has a passion for walking through battlefields. In 2010, he found himself in a scruffy area of Brooklyn — auto repair shops, warehouses and the like — that was the site of one of the first engagements of the Revolutionary summer of 1776.

An aged sign outside an American Legion post caught his eye: Beneath the faded words, “MARYLAND HEROS” the sign read, “Here lie buried 256 Maryland soldiers who fell in the Battle of Brooklyn August 27, 1776.”

So who were these men? How did they come to be part of Gen. George Washington’s nascent, ragtag army so early in the war? At hand is a boots-on-the-ground account that draws upon a medley of obscure sources, including pension records, to personalize brave men whose names have fallen into the crevices of history.

In declaring independence, the colonists faced battle with a British army that was arguably the most proficient military force in the world. Officers and enlisted men alike boasted years of experience. Conversely, the colonial forces were “a mongrel group made up of amateurs,” in Mr. O’Donnell’s words.

So the patriots sought to level the field. One key player was a Baltimore businessman and civic leader named Mordecai Gist, who was 32 years old the winter night in 1774 when he called a meeting of the city’s social elite at a tavern. The issue: the creation of an “independent military company” of Marylanders to protect their rights, even to the point of breaking away from Britain.

The agreed charter called for the formation of a company of 60 men, “gentlemen of honour, family and fortune” to bind themselves together “by all the Sacred ties of Honour and the Love and Justice due to themselves and Country.”

The Maryland contingent had its first major test in the Battle of Britain that was to catch Mr. O’Donnell’s attentions centuries later. Washington’s force was outnumbered by the British, and retreat to Manhattan was in order. The Marylanders launched a desperate charge that gave the bulk of the American forces “a precious window of time in which to escape.” As one historian has observed, this bravery bought “an hour, more precious to American liberty, than any other in its history. Had the British been able to press their attack, Mr. O’Donnell writes, “the war might have ended that day,” with Washington and his key commanders captured.

Thereafter the Maryland brigade was known as “The Immortals,” and the original “Baltimore Independent Company” spawned multiple other units that fought in battles that ranged from New York south to the Carolinas during the course of the war.

Read the rest here.