If you're looking for manga similar to Gunparade March, 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.
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.
The manga will begin with an original story that depicts the blank period leading up to the resurrection.
Several thousands of years from now there is the Joker Galaxy of five Star Systems, where there is a long, long war being fought. The god of light, Amaterasu, is trying to unite the galaxy under his rule. The fighting stands between giant mecha called Mortar Headds, their pilots, the Headdliners, trained since birth for their task and the female humanlike computers called Fatimas, necessary for controlling the MH. Many are the lives and destinies found throughout the more than thousand year long era of war, although Amaterasu seems to live through it all.
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!