Under the command of Admiral Nimitz in 1943, America advances towards Japan, engaging in a new series of island-hopping invasions through the Central Pacific. But a ferocious and inauspicious start at the Tarawa atoll forces war strategists to redesign their plan from top to bottom, sparking new innovations and breaking new barriers. With color combat footage and accounts from those who experienced the fight firsthand, this is an intimate look at some of the costliest and most critical battles of World War II.

• Jeff Wilburn