Sharpe's Regiment

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.