Who's your favorite CO in Advance Wars?
Eagle, followed by Grit and Hawke.
I am a fan of indirect units, they have unbelievable power and you cant do jack to fire back most of the time, so i am a HUGE fan of Grit. Followed closely by Eagle and Andy. Striking twice is very powerful although best if you are on the offensive/counter attack, and Andy is just hack when you heal, turns the tide right away.
Eagle was always my favorite. Yeah Eagle...
Sami. Mech rushing doesn't work all the time, but she's damn fun to use.