Originally Posted by
Zelgius the Monado
I honestly don't know, I've watched only the 2014 series till episode 4 so far.
Story is: Rygart is a non-Magician, leaves his little brother at home because his military school friends (King & Queen of Krishna) asked him to come over to the capital. On the way he collapses and is picked up by General Baldr. He gets heartfully welcomed by the royal family (especially by the Queen), he learns about the war with Athens, parts of Zess fighting with Krishna's army. Next time Hodr (King of Krishna) wants to show Rygart a mecha they can't seem to get to work as magicians. Zess & co attack the outskirts of the capital, cornering the king. Lee (one of Zess' men) has the King under shot and Rygart gets into the Mecha, jumps out of the pit and supresses Lee. Enemies retreat, "golem" gets analyzed and outfitted with new temporary armor. Zess decides to attack again, all generals defend each side of town, General True enters a prototype model and brings a greatsword, decides to flank Zess' troops while Zess and Rygart negotiate, they get interrupted before Rygart can tell Zess about the "conditions" for surrendering. True fights, loses vs the enemies' Valkyrie squad, leaves behind his greatsword while retreating. Rygart gets into a fight with Lee, beats her using the greatsword + lance he finds. Dan (random soldier) arrives to help Rygart retreat, dies to Lee's shooting skills, Rygart throws his lance at Lee's robot, disarming her. Lee commits suicide after calling the Krishnans "barbarians". Rygart returns, he wants to leave the next day, but he turns back after flashbacks to his school past/his dad's words about "Running away". Rest of the anime hasn't aired yet.
See if you can spot any differences. I just listed the major things though.