June 9, 1863 was the date for the Battle of Brandy Station. I read that this was the most terrible cavalry fight of the war, in fact the greatest every fought on the American continent...and I had never heard of it.
It was eclipsed by Gettysburg, but the moral effect of the battle gave the Federals the upper hand, so I read. Here is what one officer said" At Brandy station we wok to the fact that day that the Confederate cavalry was at last matched by the enemy and from that day on, the war wore a different aspect for both sides."
More on this later!!!