The Pimpernel Plot: Volume 3 (Time Wars)

In the 27th Century, time travel allows international disputes to be settled by "clocking" soldiers from the future into conflicts of the past to do battle in the Time Wars.

The politicians and the corporate leaders who created an entire international economy based on the idea of "an end to war in our time" believed that the past was absolute: it had already happened, therefore it could not be changed. Unfortunately, they were wrong. The greater the number of people who traveled back into the past, the greater were the odds of temporal contamination, changing history in ways that could disastrously affect the future.

Major Lucas Priest, a veteran of the elite First Division of the Temporal Army Corps, was tasked to "adjust" the blunder of a Temporal Intelligence agent who had accidentally caused the death of Sir Percy Blakeney, the wealthy English adventurer who saved French royalists from the guillotine. Now, someone else had to become the famous "Scarlet Pimpernel" and carry on that work. Trying to adjust key historical events during the bloody and tumultuous French Revolution would be challenging enough. The trouble was, rogue covert agents from Temporal Intelligence were already on the scene ...

and they had their own agenda....