Simoun Ibara Sensou ~Fuuin no Ri Maajon~

It's a story of a group of girls who pilot mighty airships Simouns to defend their nation against potential usurpers. The attack of Argentum invaders is finally over. But when Simoun is sent to secure the area of ancient ruins, the neighboring principality Simulacrum ships are already guarding the place. Girls get caught up in a war.

[Edited from Psxdatacenter]