Flags and banners

Last night I was woken by my cry
Had a dream just as plain as you and I
Saw the morning sun on a woodland in the spring
Still hear the echo crashing through the trees
Oh when I saw you down I fell upon my knees
You and I we were wearing Southern Grey
I called to you, but I used another name
I beat the ground and I cried out in your pain
But through a scarlet door I watched you slipping away
And your brothers' helpless prayers were all in vain
Last night I was woken by my cry