So I've been playing more End War and I'm enjoying it, but I will mention a couple niggling issues:

1. The battlefield seems to be pretty stagnant right now.  I keep having to fight the same battles every time I log in.  The Russians are pretty much dominating, but we're stuck at about 24 territories so there's not really anywhere else to go.
2. I find that I sometimes have to wait a rather long time to get an opponent.  It depends on which battlefield I want to fight on.  Usually I can get a fight on the US, but not on Europe.

I seem to be better than average amongst the people I've been fighting.  Over the weekend I got some stiff competition from some folks playing on the American team, but usually I do pretty well.  So I figured I'd throw together a couple strategy tips for anybody out there who might be playing the game. 

General Strategy:

• The game strongly favors defensive play, therefore, you want to make sure to secure uplinks as quickly as possible.  If you get behind it can't be difficult to catch back up.  Your best bet is to use infantry and transports to grab the uplinks.
• Engineers are the most powerful unit on the field.  A couple engineers can wipe out all kinds of vehicles.  The only thing that they're particularly vulnerable to is artillery and that can be offset by making sure to keep enemy scouts (choppers, UAV's) away from your engineers so that artillery can't be called in on them
• Make sure to keep situational awareness.  I've noticed a lot of people tend to stack their forces to try to take a fortified position.  This usually ends up leaving them wide open for a strike behind them.  You can either use a deep strike, or use infantry with transports to sneak behind them. 

WMD's:

• If you're losing, avoid the temptation to use the WMD's right away.  Once you use the WMD, the enemy gets to use one on you, so generally it doesn't buy you a lot.  Wait a bit and you'll get the ability to crash a link which they won't be able to retailiate with.
• Avoid the temptation to use your WMD's on enemy uplinks.  Your better bet is to use the WMD's to wipe out enemy troop concentrations.  It can take a while to rebuild forces, so this does more to slow an enemy down than just wiping out an uplink.

UPDATE: It appears that the stagnant battlefield was a bug.  With the most recent update, I had half a dozen options, so it is much better now.