Sharpe's Regiment: The Invasion of France, June to November 1813 (The Sharpe Series, Book 17) by Bernard Cornwell
Richard Sharpe and the Invasion of France, June to November 1813.
Major Richard Sharpe's men were in mortal danger - not from the French, but from the bureaucrats of Whitehall. Unless reinforcements could be brought from England, the depleted South Essex would be disbanded, their troops scattered throughout the army.
Determined not to see his regiment die, Sharpe returns to England and uncovers a nest of well-bred, high-ranking traitors, any one of whom could utterly destroy his career with a word, or a stroke of the pen.
Sharpe is forced into the most desperate gamble of his life - and not even the influence of the Prince Regent may be enough to save him...