I mean at the Beginning, book 54.... or whatever.
I mean, some people don't understand why Jake felt much guilt after the war. Heck these all happened:
Extinction of a species called Howlers.
The unfortunate Destiny of a kid called David.
Death of thousands of humans, Hork-Bajir, Taxxons, and Yeerks at the Yeerk Pool.
Death of the soldiers who fought as distraction.
Slaughter of the Auxilliary Animorphs.
17,000 Yeerks, flushed without warning.
Tom's death.
Rachel's death.
Plus the death of thousands more.
Plus...
Plus.
All in Jake's command. Who wouldn't feel guilty about that?