The Nauelle are the elite Tevarin boarding troops in Tevarin military.
First Tevarin War
"You never knew. That was the thing. You never knew and you were never truly safe. There was no such thing as secure space anymore."
The Naulle are known to deploy troops stealthily onto the hull of the massive capital ships with bastions of security. These highly trained infiltrators and saboteurs would breach the ships and wreak havoc inside. There are several documented cases where a Tevarin dropship loaded with Nauelle successfully took down an entire Naval capital ship.