The Invid, the arch-enemies of the defeated Robotech masters drawn by the proto-culture left in the SDF-1, have invaded Earth and taken full control, and the entire world has been occupied. Humanity has either been killed off, enslaved or left to drift. This is the sad setting Lieutenant Commander Scott Bernard finds himself in when he, together with the others of the Mars base, returns to Earth. The Mars forces try to retake the planet, but are no match for the Invid, leaving Scott as the only survivor. In an attempt to continue the fight, Scott starts to assemble a band of freedom fighters, and fights the Invid wherever he can. All of this in the hope that one day, Earth can be retaken.
Over a century ago, mankind was devoured by giant beings of unknown intelligence and origin known as Titans – creatures that eat humans alive indiscriminately and for no apparent reason. The remaining population has managed to survive the last hundred years only by building a multi-walled city capable of keeping the Titans at bay, training military recruits to patrol the perimeter and gather intelligence about their mysterious foe. Eren and Mikasa have lived a relatively peaceful life behind the city's walls, but when a massive Titan appears, smashing the outer barrier and unleashing a wave of terror, their lives are brutally changed forever...
Humanity is fighting a force that threatens it's extermination.
In Mospeada it is massive numbers of an alien race called the Inbit, in Attack on Titan it is massive biped humanoids called titans.
In both series mankind is relegated to much smaller numbers and the loss of most of their land.
Both of these series start with hopelessness at the hands of the enemy.
In the early 21st century, insectoid organisms are invading the galaxy, searching for new stars to house their young. Mankind's only defense lies with space cadets such as Takaya Noriko, daughter of a celebrated admiral killed in battle, and Amano Kazumi, the top of her class. With their skill and the power of the mecha known as GunBuster, the girls must help fight to protect the galaxy from total annihilation...
Juan "Johnny" Rico lives in a time when humanity is on the verge of a war with a relentless, invasive enemy: the Bugs. Against his parents’ wishes, Johnny enlists with the armed forces and is placed with the Mobile Infantry, where numerous hardships await him. Meanwhile, Johnny’s friend Carl also enlists as a researcher, and Johnny's love interest, Carmencita, is acting as a pilot in the navy. Collectively, these friends will try to stay alive while fighting an endless struggle against the enemy.
War in the future is rarely a beautiful thing. In the case of The New Generation Saga of Robotech and Starship Troopers, both series draw you into the human element of what really happens in War. While Starship Troopers shows the 'fresh meat' aspect of what it is like to be a true grunt soldier, The New Generation: Robotech completes the picture with what a soldier without an army can do. Do you continue fighting? True strength and mettle on the battlefield can be seen in Jhonny Rico and the ensemble cast of TNG: R. Jhonny and Scott Bernard also have to deal with loss and what it truly means to take the reigns of leadership when there is no other choice. Great battlesuit mecha action in both as well.