I'll second this. AW had hilarious(though often lame) dialogue and was just quick and fun for portable strategy. I have no interest in plodding through load screens and in-game load-times in a portable strat game.
Field Commander does -look- good, but it'll have to play like smooth corinthian leather to top the AW games. I know the reviews of the other recent PSP strat game have been pretty mixed(Generation of Chaos).
However, I'll say this: it's nice to see some original properties on the PSP, and I'm a sucker for this kind of game. Which means there's a 99% chance I'll buy it unless it gets all-around mediocre reviews.