"The Honor of the Queen," The Short Victorious War," "Flag in Exile," "Honor Among Enemies," and "In Enemy Hands" are good books in the Honor Harrington series. "Echoes of Honor" is another popular book in the series.
The books in the Honor Harrington series, also known as the Honorverse, are written by David Weber and published by Baen Books. The books are centered around a character named Honor Harrington, who is an officer in the Royal Manticoran Navy, which is the space navy of the Star Kingdom of Manticore. Harrington is brilliant in tactical command and a talented martial artist.