The final battle. Ron and Hermione incapacitated - not dead, but terribly injured - Ron crippled, Hermione blinded. The DA scattered around the room - some unconscious, some bleeding, some dead, horribly few still up and fighting.
And then Neville. Gryffindor hero Neville, who had been the bravest of them all in the end. The way he'd died... what he'd achieved...
Harry could never let himself forget.