Somehow, despite my deep and broad lifelong study of world and American history, it never jelled in my mind until just recently that the (arguably) two most pivotal battles of the American Civil War concluded on the same day.
In 1863, the Siege of Vicksburg ran from May 18 July 4 and the Battle of Gettysburg occurred over July 1-3. On July 4th, 1863, the fall of Vicksburg gave the Union control of the Mississippi slicing the Confederacy in two. On July 4th 1863, Lee and the Army of Northern Virginia were in full retreat from Pennsylvania having received a savage mauling. From that point on, the Confederacy lost all hope of foreign intervention and any chance of winning the war.
While we eat our hot dogs and watch our fireworks, it behooves us to recall what others have suffered for us:
Casualites for the Vicksburg campaign:
Union casualties for the battle and siege of Vicksburg were 4,835; Confederate were 32,697 (29,495 surrendered).[4] The full campaign, since March 29, claimed 10,142 Union and 9,091 Confederate killed and wounded. In addition to his surrendered men, Pemberton turned over to Grant 172 cannons and 50,000 rifles.[42]
One of my great-great uncles, IIRC a Col. Brown, was killed at Vicksburg, vaporized by a direct hit from a 88-lb explosive mortar shell fired from a Union ironclad bombardment barge.