[BroJoeK]

Jackson died in battle, as did the Union troops killed at Fort Sumter.
Jackson’s death came during the battle, but my hypothetical was retreating Confederates, after a battle, mistaken & killed by their own side.

Still considered unfortunate battle deaths.

[jeffersondem]

“Jackson died in battle, as did the Union troops killed at Fort Sumter.”

In the interest of full disclosure, you might add that after the bloodless fighting at Ft. Sumter, and after surrender terms were agreed upon - Union troops accidentally mishandled gun powder resulting in one death and two or three injuries.

And then, for good measure, go ahead and say - “it was as bad, or worse, than the Jap attack at Pearl Harbor, so help me.”