The Army of the Grisons (Armée des Grisons) was a field army of the French Revolutionary Army. Its commander-in-chief from 5 October 1800 to 1 April 1801 was Etienne-Jacques-Joseph-Alexandre Macdonald, during which time it operated as the hinge between the Army of Italy under Brune and the Army of the Rhine under Jean Moreau, crossing the Splügen (4 December) and capturing Trento (6 January)[1].
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Army of the Grisons Wikipedia(Text) CC BY-SA