Senyoku no Sigrdrifa

When the Pillars suddenly appear on Earth, threatening all life, it's only the act of the god Odin that offers humanity salvation. Providing a means of fighting back, he gives Earth the Valkyries, young female pilots with supernatural powers and spirit fighter planes. These skilled troublemakers, all young, risk their lives in a long-running war—but the final battle is fast approaching!
(Source: Funimation)

Note: The first episode aired with a runtime of ~48 minutes.