This monumental study focuses on Grant's Fifth Offensive (September 29 - October 2, 1864), primarily the Battles of Chaffin's Bluff (Fort Harrison) and Poplar Spring Church (Peebles' Farm). The Union attack north of the James River at Chaffin's Bluff broke through Richmond's defenses and gave Federals their greatest opportunity to capture the Confederate capital. The corresponding fighting outside Petersburg at Poplar Spring Church so threatened Southern supply lines that General Lee considered abandoning his Petersburg rail center six months before actually doing so. Yet hard fighting and skillful generalship saved both cities. This book provides thrilling narrative of opportunities gained and lost, of courageous attack and desperate defense, of incredible bravery by Union and Confederate soldiers from 28 states, Maine to Texas. Fierce fighting by four Black brigades earned their soldiers thirteen Medals of Honor and marked Chaffin's Bluff as the biggest, bloodiest battle for Blacks in the whole Civil War. In addition to his focused tactical lens, Dr. Sommers offers rich analysis of the generalship of Ulysses S. Grant, Robert E. Lee, and their senior subordinates, Benjamin Butler, George G. Meade, Richard S. Ewell, and A. P. Hill.