One historian’s journey to find the end of the Civil War—and, along the way, to expand our understanding of the nature of war itself and how societies struggle to draw the line between war and peace

We set out on the James River, March 25, 1865, aboard the paddle steamboat the River Queen. President Lincoln is on his way to General Grant’s headquarters at City Point, Virginia, and he’s decided he won’t return to Washington until he’s witnessed, or perhaps even orchestrated, the end of the Civil War. Now, it turns out, more than a century and a half later, historians are still searching for that end.

Was it April 9th, at Appomattox, as conventional wisdom holds, where Lee surrendered to Grant in Wilmer McLean’s parlor? Or was it ten weeks afterward, in Galveston, where a federal commander proclaimed “Juneteenth” the end of slavery? Or perhaps in August of 1866, when President Andrew Johnson simply declared “the insurrection is at an end”? That the answer was elusive was baffling even to a historian of the stature of Michael Vorenberg, whose work served as the principal source of Spielberg’s Lincoln. He was inspired to write this groundbreaking book, finding its title in the peace Lincoln hoped for but could not make before his assassination. A peace that required not one but many endings, as Vorenberg discovers in this book, the most important of which came well over a year after Lincoln’s untimely death.

To say how a war ends is to suggest how it should be remembered, and Vorenberg’s search is not just for the Civil War’s endpoint but for its true nature and legacy, so essential to American identity. It’s also a quest, in our age of “forever wars,” to understand whether the U.S.’s interminable conflicts of the current era have a precedent in the Civil War—and whether, in a sense, wars ever end at all, or merely wax and wane.