Answer:
I can travel from there to here by disappearing, and here to there by reappearing.
My first is in wield, sever bones and marrow. My second is in blade, forged in cold steel. My third is an 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.
Man walks over, and man swims under. In times of war, it can be burned asunder. What is it?
A mile from end to end, yet as close to as a friend. A precious commodity, freely given. Seen on the dead and on the living. Found on the rich, poor, short and tall, but shared among children most of all.
Runs smoother than any rhyme, loves to fall but cannot climb!
People take me on walks and I run and have fun. What am I?