This iconic photograph, 'Raising the Flag on Iwo Jima' taken on February 23 1945, gained Rosenthal the Pulitzer Prize. Ironically, Rosenthal was initially rejected by the army as a photographer due to his poor eyesight.
This single image was vastly important in the war effort and was heavily marketed by the Allies as a victory symbol used to gain more funds for the war effort and boost morale. In later life he worked for the San Francisco Chronicle for 35 years.