And he hadde been somtyme in chyvachie
In Flaundres, in Artoys, and Pycardie,
(= and he had been on cavalry expeditions / to Flanders, Artois, and Picardy)
These are in Northern France and modern-day Belgium. Chaucer himself served in the army here in his youth. The Squire hasn’t been nearly as far as his father, the Knight.
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