But if his character were of tough fibre, there was also a chance that he might render service to his king. At times of danger the government was glad to call on him for aid. When Tracy or Denonville or Frontenac led an expedition against the Iroquois, it was fortunate that Canada could muster a cohort of men who knew woodcraft as well as the Indians. In days of peace the coureur de bois was looked on with less favour. The king liked to know where his subjects were at every hour of the day and night.