The predominant influence on his work was the work of his master Michelangelo Cerquozzi, a painter of battles and genre scenes in the style of the Bamboccianti. Jacques Courtois' battle scenes share with the Bamboccianti an interest in the anecdotal and an attention to detail. This influence became less in his more mature period through the influence of contemporary painter Salvator Rosa whom he had met in Florence, and whose night landscapes, scenes of necromancy, soldiers, battles and genre scenes he admired. The fiery battle scenes of Salvator Rosa possibly left a mark in his more painterly touch and darker colours.