The Irish goddess of war and fate, The Morrigan can whip soldiers into a fierce battle frenzy.
Your prompt is THE MORRIGAN.
The battle rages
In the chaos a crow flies
Over the victors
She can appear as a crow, presaging victory, but if she is seen washing your clothes, you are fated to die.
Black crow, death's omen,
War queen, the mustering hosts
Vie for your favor
Being part Irish, I just had to chime in on this one.
Ride, ride, wild lady
Call our arms to rise anew
Glory awaits us