My question is though, wasnt the battle at the fist of the first men with the rangers of the nights watch against a huge pack of white walkers? Aren't many free cities north of the Fist? How does a huge pack of white walkers get past the wildling army untouched? Where is Mance Raiders army right now and other wildling cities in relation to the white walkers? How are white walkers getting to crasters keep to pick up babies without being seen/attacked? I know most people are afraid of them so run away but it all seems very strange right now.
ima answer ur questions 1 by 1.
when they fought the zombie+white walker army at the fist, thats very far north. very few wildling clans live that far north. the thenns and an off screen clan called the hornfoots(nikkas walk around barefoot up there so all their feet look like black horns ).
the wildlings are running away from the white walkers but they number 100,000 when u count non soldiers. so they moving veryyyy slow with all their women and children and goats and cows and old people. they are from the north so they know how to avoid the white walkers by hiding in caves and such.
whenever a white walker comes down to crasters or anywhere near the wall, its usually just 1 of them. probably a scout or 2 to see ahead.
im sure the wildlings are probably losing people to the walkers little by little which is where they are getting their zombie army. they just dont show how fukking big the area north of the wall is.