Franz Josef von Hallwyl
Franz Josef von Hallwyl (2 September 1719 – 6 April or 7 May 1785) was a Swiss mercenary in the service of France who reached the rank of maréchal de camp.
Franz Josef von Hallwyl (2 September 1719 – 6 April or 7 May 1785) was a Swiss mercenary in the service of France who reached the rank of maréchal de camp.