Guide to gaining war prestige
Attack:
-Method 1- The frist method is the easiest but possibly the one that requires luck and patience. It is great for those with not too big armies.... Its very straightforward. All you have to do is scout like crazy. This can be very frustrating but a few tips are to scout mostly at night it possible. Many people have troops training and at around 1am or later they are done

-Method 2-I personally like this method of attack it is called "starvation". For this method you will need good speed, a nice level marching, 4-10 calvary, 3000+ infantry, and 1k+ catapults depending on the target. Now if you have one device like most people all you have to do is take over the owners crop oasis' so his output becomes drastically negative. Then i attack 1-2 times to get his crops in his main city to 0. When this happens all of his troops that were hunting are automatically recalled. YAY now you can attack!. A few tips are too make sure obviously the player is not online! A second tip is to make sure u aren't headed for going over the daily attack limit which is 5! so i attack crops 2 times main 2 times and city with troops once. This may vary depending on amount of crop oasis'. Another good tip is that you should always attack people that are either lower levels or have less cats. You obviously don't want to have all this work and then find out he has a close to or bigger army!
Defensive
-Method 1- This method is risky but will pay off. Now this method is also great for players that have a good size army but are not a high level. Basically you bait people into attacking you! It is nice to have a nice line of turrets and traps,but not direly necessary. Lets say you have 2k catapults and 4k infantry. Well leave out about 250-500 infantry and 100 cats. This will ensure the person attacks you with about 500 cats and maybe some infantry. When theres about 10 seconds left you harvest the rest of your army from hunting and BAM! you wipe out this player! A good tip is that you never want to leave out more than about 30% of your army. You want to be attacked, but you don't want to leave out so much that people send more than you can handle. Also NEVER LOG OFF WHEN USING THIS STRATEGY AND ALWAYS CHECK YOUR ACTIONS! People could get a hidden attack and your bait could be gone because you wanted to be tricky..
-Method 2- This is for when you are being starved. First of all the player will take your oasis. I say let them. If you can get a cat over there before his calvary arrives GREAT, but if not don't sweat it. Normally it take 4 attacks for him to get you down to 0 crop. As soon as he does his fourth attack BUY CROPS!!! He is scouting you right now waiting for that crop to go to 0 and those troops be recalled. Usually if you do this the person quits. If you believe he has a second device and is going to attack 5 more times its best to go ahead and dispatch to your second city.
General help.
It is very important that you upgrade marching and shooting. Marching is very cheep relative to other techs to upgrade. You want a high lvl speed and attack. I also find it helpful to upgrade attack at the tech center! It is not imperative though. Upgrade shooting first then marching then turrets. Turrets are useless unless lvl 7 or above so save those for last. The amount of prestige you get is equal to the crop consumption of the unit you kill. So 100 catapults = 10 crop consumption = 1k prestige (with no losses).
Please feel free to tell me things to add