The Body Count

[prep0strus]

No: HPFGUIDX 172890

I'm wondering if anyone can shed some light on the body count at the
end of the big Hogwarts battle.  Before round 2, Voldy states that the
defenders have lost half their number, and that they're outnumbered by
death eaters.  After round two, I didn't have the impression that much
time had passed or many more had died.  And we learn that around 50
defenders had died at the end.

First of all, I had no idea there were that many death eaters... I
guess we have to assume that there were death-eaters-in-training as
well as some imperiused non evil folks. 

But more confusing is the number of defenders.  Before the waves of
reinforcements, it should just be order members, teachers, and of-age
students (and a couple more who snuck out).  We don't know precisely
who died - it's possible that among the ones who weren't Fred, Lupin,
Tonks, and Colin there may be a teacher (Prof. Vector, anyone?) or a
named student or other non-red shirt.  Mostly, though, it has to be of
age students who fought the good fight.

the problem is... of age students would be 7th years, and maybe 1/2
the 6th years.  Seeing as how the largest group we've seen would be
male griffindors (5), most overage students there could possibly be
(and shouldn't even be that many) would be 60.  That includes
Slytherins, and others who wouldn't return out of fear.

How did the body count get so high? And I don't recall anyone
mentioning many death eaters.  I know good guys don't go for death
blows as often, but it seems that team evil did REALLY well.  In
previous battles, there were a lot of spells thrown, and they were
going for death, but there wasn't much.  I know this is the Final
Battle, but... 50 casualties?  In the Encyclopedia I'm going to need
an 'In Memoriam' page listing the fallen heroes, cause I just don't
see where the cannon fodder came from.

I'd love to hear any ideas and explanations I've overlooked.

~Adam (Prep0strus)