This week, Martha is joined by Charles Gubish, an Iwo Jima veteran who fought alongside her uncle, Harry Gray, in World War II. Charles sits down and recollects the difficulty of joining the U.S Marine Corps, the toll the war took on him and his fellow soldiers and shares his fondest memories of his foxhole buddy, Harry Gray.

She goes further to find the truth about her uncle's life during the war in her new book, Unknown Valor: A Story of Family, Courage and Sacrifice from Pearl Harbor to Iwo Jima

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