I usually use the position of the sun, and some in head mathematics. or the constellations in the night sky in relevance of where I am, to figure out
where I am and going. Yay for science. I do not need a compass, although they do come in handy
Using a lensatic compass for navigation can get you on something as small
as a parked vehicle if you're good enough.
It's actually required learning. Some may need a
refresher though. 