
If you're looking for anime similar to Strike Witches Gekijouban: 501 Butai Hasshinshimasu!, you might like these titles.
Renton, son of scientists, and Eureka, a girl who can't live under the sun, are raised together when very young and become very attached to each other. One day, Eureka is taken away. Powerless at the time, Renton vows to rescue her. He enters the military and is soon assigned to the Independent Youths Unit 303 of the First Mobile Forces thanks to his exceptional performance alongside his Nirvash, a bio-mechanical armor/control system. Unknown to Renton, there is a plot to extinguish the alien invasion that is currently happening. It involves not only him, but Eureka too.
The always-busy Teletha, the captain Mithril's Tuatha De Dannan, finally has a day off. Instead of resting and relaxing, though, she has been tricked into getting drunk with Melissa! To make matters worse, she then wanders around half-naked and bumps into the clueless Sousuke. Struggling to remember what she did on the previous day, she must regain her memories and save her stuffed Bonta-kun at all cost!
Gonzo does it again with this action-packed mecha comedy. She's an ordinary high school girl. He's a counterterror agent assigned to protect her from those who would steal the information locked in her mind. OK, so she's not so normal after all. Armored Slave battles and lovers' spats abound as Sousuke and his comrades try to track down the mysterious Gauln before it's too late.
In 2052, mankind has spread to planets across the galaxy, living in peace and harmony. But when a mysterious vessel arrives at Earth, human life as we know it is virtually destroyed in the blink of an eye. Invaders from a destroyed planet have been searching the galaxy for a new world, and they're out to take Earth by force for their own. Now, against all odds, Colin Collins and a skilled military team must fight to save their race with the help of an experimental submarine and spacecraft.
The anime centers on a unique squadron of "Witches who don't fight." Instead, the squadron sing and perform music to protect the smiles of those who have been driven out of their hometowns by the Neuroi.
Cyress was a peaceful planet until Solomon, a mysterious terrorist group lead by Duran Gash, seizes seven PDP missiles that are capable of destroying entire planets. Jim Hyatt is chosen to be the man to lead a team to do what seems to be impossible: Find a way to both rescue the hostages and reclaim or destroy the deadly PDP missiles. The problem though is that the team members don't really like each other...
The year is 20XX. Reploids - thinking robots based on the design of 'Megaman X' - work side by side with humans in relative harmony. Rogue reploids, which are prone to becoming violent for no reason, are generally few and far between; however, an abnormal rise in 'rogue' activity has now swept the city and only two elite Maverick Hunters can save the day - the dynamic duo, X and Zero! As their investigation continues and rogue activity increases, X and Zero can't help but feel they are being deliberately misled. With time running out and rogue reploids on the verge of destroying the city, can our heroes track down and thwart the villain before it is too late?
The hostility between Earth and Mars has grown, and a war is drawing close. This, however, does not concern James Links, a rough American cargo hauler who wants nothing else but to patch up the relationship between him and his family. But things change when he discovers the highly sought after orbital frame Dolores, quickly causing himself and his two teenage children to be framed for murder and accused of terrorist actions. Follow them on their journey to Mars as they try to clear their names of these crimes they did not commit, with only each other to rely on.
Nanako works day and night to cook and clean for a house full of interesting characters. Notably, a scientist who has plans of turning Nanako into his greatest experiment. But the military and the church have plans of their own in mind, once the doctor succeeds with his experiment and trains Nanako for ultimate strength and endurance.