Fire is your friend ….. fire is heat for warmth & cooking, safety as well as signalling. You need fire, don’t get caught without it!
Not much beats Bic Lighters! They are bomb proof! Like having 50 packs of waterproof matches all in one. Get two or three, keep one in your pocket, keep one in your pack & keep one on your rifle sling.
Having a way to start a fire is an “Absolute Essential” when it comes to survival gear.