Powered Armor Dorvack(1983)

Tokusou Kihei Dorvack

When an alien force lands at the base of Mont Blanc, the proud armies of Earth mobilize to fight back! Colonel Takagi created the Dorvack Team and its fabulous transforming Variable Machines in preparation for this day, but the military bureaucracy has put its faith in powered armor infantry instead. Undeterred, young pilots Masato, Louie, and Pierre seek to prove their worth. But as the Dorvack Team begins to climb the ranks, they’ll learn at every turn how rarely real world battlefields turn out the way they do in movies.

(Source: Discotek)