7. Mobile Suit Gundam
Guts, seeks sanctuary from the demonic forces that is attracted to him and his woman. because of a demonic mark on their necks.
And also he seeks vengeance against the man who branded him, as an unholy sacrifice.
Aided only by his titanic strength, which gained from a harsh childhood lived with mercenaries.
all the while fighting with a rage that might strip him of his humanity.
5. Legend of Galatic Heroes
the Galactic Empire and the Free Planets Alliance are constantly at war.
the young Reinhard von Müsel, After his sister is taken to become the Kaiser’s concubine.
He Swears to take down the Empire in order to rescue her.
He and his loyal friend Sigfried join the military academy together as the first step in Reinhard’s plan.
A gate appears in Tokyo.
From the gate pours out monsters, knights, and other fantasy-like beings.
As a result, they kill many of the citizens of Tokyo.
So, The government sends a small group of soldiers to the alternate world beyond the gate.
Led by otaku soldier Yoji, they will find out that the Dragons Attacks the villages in the world.
This is just the perfect sample of a Great Action Military War Anime.