Gall Force: Earth Chapter(1989)

Gall Force: Earth Chapter is an anime series following the final stand of Earth's remaining military forces against an overwhelming mechanical enemy. With most survivors evacuated to Mars Base, commander Sandy Neuman leads a desperate assault on the MME citadel in Australia, relying on thirty hidden missile silos as humanity's last hope. Facing both the relentless machines and reluctant support from their Mars-based allies, Sandy and her squad must fight through brutal combat to turn the tide of an unwinnable war. The MME proves far more formidable than anticipated, forcing the Earth forces into a grim battle for survival where victory remains uncertain and sacrifice inevitable.