Topic: Travian Army Preservation
I read about this in a guide and thought I should share.
When you're going to be away from your computer, send your army out to raid a small/undefended village far away. That's where that little greasemonkey travel calculator comes in handy. If I'm going to bed, I check how many hours before I will be at my computer eating breakfast and checking email. Normally that's between 7-10 hours.
Next, I find villages 4-5 hours away. From those, I pick smaller inactives and non-Gaul. Then I send out my attack, go to bed, and sleep well knowing my army will not be destroyed.
When I wake up in the morning, my army is usually just a few minutes from home. Safe.
Now to protect high value targets like settlers...
Find a friendly Gaul (we have several) with a trapper. Send the settler on a raid. The settler will be trapped and unable to be killed. Once you have the other trappers ready to go, the Gaul releases the trapped settler.