Battle System

I'm trying to make a battle system, not with cubes and capsules, but with models, full human model. My idea was to animate the arms(an attack), put the sword inside the hand(in hierarchy) and have the animation going towards the raycast(center of the camera). I tried this, the sword visually moves, but technically doesn't, his position are always the same. This is a problem because i was trying to make a collision based battle system. The other problem was having the animation going to the center of field view, i thought i could do this by ripping the arms off the model and parent them to the camera, this way they would move according with camera. I need some help with this, to figure out how to do it. I will appreciate any kind of help.