Basically Natsu and Gray are best friends who enlist in the war together and suffer through the hardships of defending their country while making some new friends and sparking a little romance on the side. There will be violence, drama, friendship, loyalty, and love.
Here are the roles of the characters.
Natsu, Gray, Elfman, Loke, Macao, Wakaba - American soldiers
Gajeel - Sargent
Gildarts - General
Lucy, Levy, Cana, Evergreen - Rosie Riveter Factory girls
Juvia, Mirajane, Lisanna - Red cross nurses
Erza, Laxus, Freed, Mest - French Resistance
Jellal, Bickslow, Alzack - Fighter pilots
Romeo and Wendy - Paper boy and girl (They were important because they kept America informed)
Let me know in the review section if you want me to write this.