the 'ski patrol' [=a group that patrols an area on skis]
The guard makes a 'patrol' of the building every hour.
a 'foot patrol' [=a group that patrols by walking]
(..) - Six men wearing US-issued army boots. They came in from the north, and then they followed the guerrillas. Mean anything to you? Probably just another rebel patrol. They operate in here all the time. Get ahead and see what you can find. What's he got? Same business. Guerrillas hauling (..)1987 Predator