The Timekeeper Conspiracy by Simon Hawke
Most of the details involving how this series started were covered in the review of the first book, The Ivanhoe Gambit. Since I don't want to rehash the setup every time, I have reclassified a special listing for these books. If you click on "Time Wars series" on the right side of this web page, you will see the entire list of books I have reviwed to date.
The second book in the "Time Wars" series, The Timekeeper Conspiracy involves a renegade terrorist group out to destroy the war machine. The Timekeepers have a goal to create disturbances that will force the entity governing time stasis to exert a lot of manpower to prevent time splits, thus forcing them to eventually quit using time travel altogether.
The second book takes place in 17th Paris, and as with the previous book, many of the characters are "real" historical figures whom we readers always thought were just fictional. To wit. the time Commandos interact with the characters from The Three Musketeers here. i.e. Athos, Porthos, Aramis, D'Artagnan. And a new, yet familiar ally, comes into the fight. Andre de la Croix, the French woman posing as a male knight, has come to 17th century Paris with a deserter from the Time army.
The renegade Timekeepers are led by a maniacal Adrian Taylor, whom at the start of this novel, has just had himself transgendered to look like Milady de Winter, another important character from the Dumas novel. More and more however, the man Taylor becomes overtaken by the pesonality of the character he has taken and becomes more demented.
The Time Commandos, as they are called from this novel on, have their hands full, not only dealing with the terrorist group, but also with a CIA-like group (conveniently called the TIA here) who seems determined not to let them have all the information they need to complete their mission.
I rate this one 7 stars.