this is why almost immediately after the disengagement in 2005, the army was back inside the gaza strip a few days later and it was a non-event. it wasn't a 're-invasion' or a 'return' because they never really left, just moved their barracks a few kilometers away

mass confinement meant armed resistance was limited to projectiles or infiltration. the former had to deal with challenges of range and accuracy, the latter was extremely difficult and dangerous. the area around the fence was depopulated, razed, and turned into a kill zone.