They dug tunnels and some found a blind spot and some camouflage by putting there self in a group of Russians being let go or hide in the truck under all the brunches
by hiding away and then during the night they would escape, most of the time they would have gotten caught or a German citizan would see them and nark on them. but only a few got away eg: Anne Franks...
No, the camps were well guarded and the outer perimeter fences - there were usually two and sometimes three of them - had high voltage currents. Escape was very difficult and very rare.
It was extremely hard but if you were lucky enough you could dig your way under the fence and run for your life but if you got caught you were dead. It was extremely hard, if you were lucky you could...
Japanese and most German prisoners remained confined to the camps. Many Italian prisoners were allowed out to work on farms and in many cases left the camps for the duration of the war.