May–June 1864Reputable sourceWell documented
Grant's Overland Campaign
On the timeline · around May–June 1864 ·
What happened
Now general-in-chief of all Union armies, Grant launched a relentless offensive against Lee in Virginia. Through the bloody battles of the Wilderness, Spotsylvania, and Cold Harbor, Grant absorbed enormous casualties but — unlike his predecessors — kept pushing south, pinning Lee's army near Petersburg.
Why it matters
Grant's willingness to accept heavy losses and never retreat began the slow strangulation of Lee's army that would end the war.