Also remember that taking pictures, well looking at them, actually;), helps jog the memory.
One idea is to take "overview-pictures" of the table before and after each turn.
edit: I think the sheet, while good, is to nitpicking. I'd also like space to note down things like: "Suffered a torrent of fire"; "savagely slaughtered the guardsmen"; "Valiantly defended the bunker from the berzerkers" and the like, to help the battle report by having phrases ready.