Lily,
We just purchased crates for shipping for moving. The brand Petmate is airline approved. The regulations for iternational travel are different than for domestic. From a sit position the dog needs 3" of clearance to the top or no go. You will need a giant size kennel, they are availble at Petsmart for $200. Some of the airlines do sell them. If I were you, I'd take the dog and the kennel to the airline and make certain you will clear. I've know individuals who were stuck because the dog/crate clearance was not acceptable. Also don't forget to purchase the signs, water food dishes, etc.
Good Luck!
Let us know how things are in Germany!
Deena