Scifi Book Help
 

When I was younger(somewhere in my teens) I ready a scifi book that I would really like to read again. Only problem is I can't remember the title. Although I do remember some key things that should help identify it:

• It was about a massive alien invasion on earth
• There was a giant mobile artillery cannon that could disguise itself as a mountain via a foam
• The aliens either looked like horses of bugs(I can't remember)
• I think it was published by Baen,
• There were robotic exoskeletons to help soldiers carry large amounts of supplies

For the life of me I can't remember the book, and it's bugging me. I've tried several google keyword searches that have not come up fruitful. I'm hoping someone here has read it or knows a better way to look for it.

Any help would be appreciated.

Sounds like the posleen series by John Ringo

http://en.wikipedia.org/wiki/Legacy_of_the_Aldenata

The Posleen, (The aliens) ,look like horses and the main hero in the story uses powered armour and commands one of the armoured units.

Cant remember "Bun Bun" ,(The Anti landing ship mobile gun ,the names a reference to a psychotic mini lop rabbit character from the web comic Sluggy Freelance!) ,being able to disguise itself with foam but its been awhile since I read the series.

All in all a really great read and what got me reading John Ringo's books.

I'm not sure if that's it, but I'll give it a shot.