1) Lowest ranked players (bottom 5 by level):This is really the most important part of the strategy.
Our lowest ranked players need to attack the weakest opponents as soon as possible, and earn as many stars as they can straight away.
If you are in the lowest 5 ranks (the bottom 5 towns on the war map), please attack as early as you can and as best as you can, and use up both your attacks. Don't worry if you don't do very well, we were all low level at one stage, the most important thing is to try! And if you can earn a few stars in the process, that's a bonus. This is really the "backbone" of the clan war.
2) Middle ranked players (between top 5 and bottom 5):Middle ranked players can attack the middle ranked opponents pretty much whenever they want. However, don't leave it too late and try not to "hog" the weakest opponents until the low level players have had a chance to attack.
3) Highest ranked players (top 5 by level):The strongest players should then "mop up" towards the end of the war, when there's only a few hours left. They will now have a good chance of 3 starring all the towns that have been missed up to that point, earning the most possible stars. I think this will give us a good chance of winning some wars.
As a general rule, try to target the opponent that is the same rank in the war as you, only target the weakest towns if you are in the lowest ranks. For example, if you are 6th, try to target the 6th opponent. If you really don't think you can get at least 2 stars against them, only then target a weaker opponent.
Try to leave the weakest opponent to the lowest ranked player in our clan. They have less chance than anyone to earn any stars, so give them that chance.
Tips for preparation stage:
In the war build your town 100% defensive. This means protect your town hall with everything you have. Resource collectors and storage should be a secondary concern. Remember if your town hall is destroyed the attacker automatically earns a star, if 50% of your town is destroyed that also earns the attacker a star. Keep this in mind.
Only high level players should donate troops. Level 5-6 archers, 4-5 wizards or level 2-3 dragons are good. If you have weak troops, please do not donate to war castles, leave it for the higher level players to donate.