Shutting the eyes in panel 4 was John’s call: the script had them continuing to stare widely. A good call,  I think… it’s more dynamic, and a better way to transition to the shattered-glass rendition of the War that Felled Battleshire.

“War” isn’t quite the right word, there, but “slaughter” implies something purely external and “zombie plague” doesn’t convey that the infected killed each other off when there was no one else to kill. “The Fall of Battleshire” is about as specific as you can get and still be short and accurate.

Byron’s catatonia is a deliberate callback (or callforward?) to that other time one of his berserk episodes killed his friends.