''The Excalibur Alternative'' is a 2002 science fiction work by DavidWeber, expanding on his earlier short story ''Sir George and the Dragon'', and shares a universe with DavidDrake's ''Literature/RanksOfBronze''.

14th century English knight Sir George Wincaster and his men are caught in a horrid storm en route to France. Saved by aliens, they find that their saviours' motives are hardly altruistic; the aliens want to use them as hatchetmen and have the power to quell overt rebellion. However, the thirst for freedom is not so easily quenched, and after a long time a ghost of a chance appears to them.

!This novel contains the following tropes:

* DefeatingTheUndefeatable
* FeudalFuture
* HumansAdvanceSwiftly
* HumansAreSpecial
* HumansAreWarriors
* OutsideContextVillain: The aliens that abducted the heroes were this, and the heroes become this to the alien races they are being used against.
* ReallySevenHundredYearsOld
* TheReptilians