NEW YORK TIMES BESTSELLER.

In honor of the 75th Anniversary of one of the most critical battles of World War II, the popular primetime Fox News anchor of The Story with Martha MacCallum pays tribute to the heroic men who sacrificed everything at Iwo Jima to defeat the Armed Forces of Emperor Hirohito—among them, a member of her own family, Harry Gray.

Admiral Chester Nimitz spoke of the “uncommon valor” of the men who fought on Iwo Jima, one of the bloodiest and most brutal battles of World War II. In thirty-six grueling days, nearly 7,000 Marines were killed and 22,000 were wounded.

Martha MacCallum takes us from Pearl Harbor to Iwo Jima through the lives of these men of valor, among them Harry Gray, a member of her own family.

In Unknown Valor, she weaves their stories—from Boston, Massachusetts, to Gulfport, Mississippi, as told through letters and recollections—into...