1775 – Having been unanimously voted commander-in-chief of the Continental army by Congress several weeks prior, George Washington arrives in Cambridge, Massachusetts to take command of the army he would lead to victory eight grueling years later.
1778 – British and Iroquois forces kill 360 people in the Wyoming Valley massacre amid the American Revolution. Some of the raiders hunted the fleeing Patriots before torturing to death upwards of forty who had already surrendered.
1863 – The final day of the Battle of Gettysburg during the War Between the States culminates with Pickett's Charge. That didn't go well.
1898 – Amid the waining days of the Spanish-American War, the Spanish fleet is destroyed by the United States Navy in Santiago, Cuba. Victory would be secured the next month.