Ashes of Victory by David Weber (Honor Harrington 9)

Honor is still recovering from her tour in enemies hands. Now she has to deal with everything that happened when her friends and home planets thought she was dead. Nimitz also has to face a treecats worst fear.

While this happens White Haven and the Royal Manticore Navy gather a new force to take up the Offensive again: Armed with new weapon. Super LACs, Ghost Rider (an Improved EMC system), long range missiles, Pod Super Dreadnoughts.

The Peeps are also preparing offensives of their own, both military and personally.

The internal political struggle in Haven, Grayson and Manticore are at the heart of this book.