Lead: One hundred and fifty years ago the Republic was facing its greatest crisis. This continuing series examines the American Civil War. It is "A House Divided."

Intro: A Moment in Time with Dan Roberts.

Content: Robert E. Lee had known it would come to this. He told Jubal Early that a siege was disastrous and would doom his army to defeat. His lines were paper thin around Petersburg and every day Yankee strength proved increasingly irresistible. Yet in the weeks of early spring 1865, he dreamed of a breakout, of joining Joseph Johnston in North Carolina and of a last campaign, first against Sherman, and then against Grant, whom he hoped he could give the slip.