1823 29 Aug. 2/4 The arrest of Mr. Gleeson was occasioned..by his refusing to answer the challenge of the police patrol.
1936 ‘N. Blake’ xiv. 258 On the main road he'd have to go straight for a bit, and the police patrols would be out.
2002 2 Aug. 30/3 Police patrols are concentrated in the town-centre.