Did some research on corvids and their roles as symbols for a project I’m mulling over, and came across the Norse Raven Banner tradition.
Odin was also closely linked to ravens because in Norse myths he received the fallen warriors at Valhalla, and ravens were linked with death and war due to their predilection for carrion. It is consequently likely that they were regarded as manifestations of the valkyries, goddesses who chose the valiant dead for military service in Valhalla. A further connection between ravens and Valkyries was indicated in the shapshifting abilities of goddesses and Valkyries, who could appear in the form of birds.
The raven appears in almost every skaldic poem describing warfare. To make war was to feed and please the raven.