../ earthwork,_small_trench_or_fortification/ 05-Apr-2018 18:52 - fort/ 05-Apr-2018 18:52 - fortified_line/ 05-Apr-2018 18:52 - foxhole,_emplacement_or_weapon_site/ 05-Apr-2018 18:52 - strong_point/ 05-Apr-2018 18:52 - surface_shelter/ 05-Apr-2018 18:52 - underground_shelter/ 05-Apr-2018 18:52 -