There's a downloadable trailer for David A. Prior's Zombie Wars on the website of international sales agent American World Pictures (AWP). There's a larger - but somewhat sped-up - version of that trailer on Prior's website.
The screenplay for Zombie Wars was written by Prior. The movie stars Adam Stuart, Alissa Koenig, Jim Marlow, and Kristi Renée Pearce.
Here's a description of Zombie Wars from AWP's website: "Nobody knows exactly how it happened. Some think it was the tail of a comet that passed to close too the earth, while others believed that it was simply time for man to atone for thousands of years of sinning. Whatever the reason, the dead had risen from the ground, and they were hungry! ¶ After years of war, only small rebel bands of humans remain in the war against the undead. When Brian, the leader of a military group, is captured by the enemy, he is taken to a nearby farm where he learns of a horrific secret - the zombies are farming groups of humans, and harvesting them as food. Now it is up to Brian to organize an uprising, and reclaim the freedom of his fellow humans. However, once the battle is over an even more insidious secret waits in the nearby town… ¶ With non-stop action, hordes of zombies, and some of the most realistic makeup FX seen in years, Zombie Wars has earned its place in the annals of horror."