After nearly 100 years of war between the nations Gilgamesh and Balarant, battle-weary soldier Chirico Cuvie finds his world utterly shattered when what seems to be a straightforward mission to infiltrate an enemy base turns out to be an attack on friendly forces. Furthermore, in the confusion that ensues, he stumbles upon a strange container with a beautiful woman sleeping inside. Unfortunately for him, he hasn’t just discovered any woman, but the key to a dark and complex political plot, and the perpetrators are determined not to let him live with their secret. Haunted by the memories of this mysterious woman and the betrayal of his superiors, Chirico must now fight to discover the twisted truths lurking behind the veil of war and gain new meaning to his bitter life.
Mecha shows? More like hard/sci-fi. Fang of the Sun Dagram marks the directorial debut for Ryosuke Takahashi [edit: under Sunrise], widely known for his successful Votoms franchise. Votoms and Dougram (along with Layzner and potentially Galient) are probably the most serious, grittiest, mature, 80's mecha series out there. While Dougram is far more political, dialogue heavy, and loaded with a bigger cast, whereas Votoms focuses more on Chirico's journey - both shows put a heavy emphasis on detail, whether it be plot or action related with the gritty mech's, and they're just generally mature and -manly- shows all around. These are shows that even non-mecha fans could probably get into if they're into militaristic/war sci-fi.
The war between the monarchical Galactic Empire and the democratic Free Planets Alliance has raged ceaselessly across the galaxy for over a century, with the fleets of both powers having fought countless battles. Currently the conflict revolves around the strategic Iserlohn Corridor, one of only two passages of space through which the two forces can access each other. Here the Empire has built the nigh-impregnable Iserlohn Fortress, whose deadly weaponry has thwarted repeated efforts by the Alliance to capture her. Phezzan, a neutral mercantile state, controls the other corridor. The long war has resulted in an indecisive stalemate, but there are two men from the two worlds who will change everything: Wen-Li Yang, a gifted strategist from the Alliance who wants nothing more than to retire and be a historian; and Reinhard von Lohengramm, a man from the Empire whose ambition knows no bounds. Their loves, struggles, triumphs and failures play across an interstellar stage of intrigue, war and death.
Douram is essentially the LOGH of mecha. Lots of gray line political intrique, who's really good and who's really bad? Lots of attention to detail with the battles, diving into tactical analysis' and such. Some of the best war, militarlistic drama's you'll find for sure.