I have just started a new game and I've decided I want somebody else to do the fighting for me. What would be the most active companions I could have in one go, including dogs, zombies, conjuration etc

One Dog, One Human. Then you can have one conjured person.You could then also just do a quest that involves a character fighting with you( like the main quest when you are going to sky haven temple with the woman and old guy) and by the way welcome to the forum and have a http://www.google.co.uk/imgres?hl=en&biw=1280&bih=681&gbv=2&tbm=isch&tbnid=2lk5dO_2SitH8M:&imgrefurl=http://www.uesp.net/wiki/General:Fishy_Stick&docid=WeWO7VAdaazvuM&imgurl=http://images.uesp.net/c/c4/Fishystick.jpg&w=140&h=230&ei=znekT_nkKOLK0QXkptyRBA&zoom=1&iact=hc&vpx=184&vpy=378&dur=457&hovh=184&hovw=112&tx=93&ty=78&sig=113899330227757350513&page=1&tbnh=133&tbnw=87&start=0&ndsp=20&ved=1t:429,r:7,s:0,i:90