Captain Lossow of the King's German Legions was a dragoon and friend of Richard Sharpe's. He first appeared in Sharpe's Gold, saving Sharpe's life after he was wounded and unconscious from blood loss.
In Sharpe's Sword, he managed to scrounge an entire crate of stone bottled beer with the note: The French could not kill you, so drink yourself to death. Your friend, Lossow. Sharpe was touched.
It would be Lossow's dragoons who accompanied Hogan and Sharpe in their pursuit of Leroux, and witnessed his death.