If you're looking for manga similar to Full Metal Panic! The Second Raid, you might like these titles.
A three-man team of Martian-based Coordinators led by Agnes Brahe commands the Acidalium. The trio gets involved in the second EA-ZAFT War as Agnes controls the Voiture Lumiere-based mobile suit known as the GSF-YAM01 Δ Astray.
In A.S. 106, Five years after the "Vanadis Incident" which denied all Gundams, those cursed Mobile Suits are now roaming the earth.
Outer space, the far future. A lone seed ship, the Sidonia, plies the void, ten centuries since the obliteration of the solar system. The massive, nearly indestructible, yet barely sentient alien life forms that destroyed humanity’s home world continue to pose an existential threat. Nagate Tanikaze has only known life in the vessel’s bowels deep below the sparkling strata where humans have achieved photosynthesis and new genders. Not long after he emerges from the Underground, however, the youth is bequeathed a treasured legacy by the spaceship’s coolheaded female captain.
Leif Recitativo was ordered by Veda to gather a group of living bio-terminals called Innovades. But members of Celestial Being's shadow group Fereshte (which is now disbanded and rejoined the main organization) reappears.
Years after a great war was waged between the portion of humanity that migrated to Mars and those who chose to remain on Earth, a tentative peace has been struck. But not everyone is happy with the status quo. When the Princess Asseylum of Mars makes a diplomatic visit to Earth in an effort to strengthen ties, some see it as an opportunity to reignite the flames of war. Can the citizens of Earth stand against the awesome might of the Martian Kataphrakts a second time?
At the turn of the twenty-first century, policing in Tokyo has taken a very unique approach: officers fight crime with cutting-edge mecha called Patlabors. Division 2 of the Tokyo Metropolitan Police Special Vehicle Section 2 is one team entrusted with these powerful weapons, but its assembly of clumsy eccentrics could prove a challenge all of its own. Under the staunchly old-fashioned leadership of Chief Sakaki, there are, among others, deadpan Captain Goto, mecha-obsessed Noa Izumi, and straight-talking Asuma Shinohara. Follow them as they try to outwit mad terrorists one minute and survive dysfunctional team dynamics the next!