The Battle of Cold Harbor (May 31-June 12, 1864) stands as one of the Civil War's most lopsided engagements. Near Richmond, Virginia, Union General Ulysses S. Grant ordered repeated frontal assaults against entrenched Confederate positions commanded by Robert E. Lee. On June 3, the main Union assault lasted less than an hour but cost approximately 7,000 casualties against Confederate losses of only 1,500. Grant's forces achieved nothing—no territorial gain, no tactical advantage. Exhausted from

In 1864, a secret plan to blow up Richmond, Virginia was foiled. But how do you even blow up an entire city? Uncover more Civil War history tonight at 8 on America's Hidden Stories: Targeting Jefferson Davis. http://bit.ly/2EgyTuH #HistoryMonday | Smithsonian Channel