I had this happen to me as well. I lost connection to the game when my internet dropped out. Came back and i'd lost a 20 level 5-6 knights and mounted knights that were in my village. My hero had also ranked up by 4 levels from level 11 to 15! Think i'd prefer the army back though...
In game name is Silkjc, but it was yesterday so might be too late to fix.
On another note, why does the game have to crash to desktop when it looses the network link. It is extremely frustrating having to reload the game, I play on mobile broadband and it drops out for a few seconds every now and then... Can't it keep loaded resources and drop back to login state?
Patching...validating....loading..logging in...loading....watching cinematic. Each crash takes AGES to recover from!