Answer:
You throw me out when you want to use me and you take me in when you don't want to use me. Who am I?
My first is in wield, sever bones and marrow. My second is in blade, forged in cold steel. My third is in arbalest, and also in arrows. My fourth is in power, plunged through a shield. My fifth is in honor, and also in vows My last will put an end to it all.
They have not flesh, nor feathers, nor scales, nor bone. Yet they have fingers and thumbs of their own.
What instrument can make any sound and be heart, but not touched or seen?
Crooked as a rainbow, and slick as a plate, Ten thousand horses can't pull it straight.
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.