The rules that use the category "<location_prep>" are:

<unit_nom-sing>

<unit_n-sing> <location_prep> <engagement_loc>

<location_mod>

<location_prep> <point_loc>

<establish_base_of_fire_command>

<set_up_verb> <base_of_fire_phrase> <location_prep> <engagement_loc>

<set_up_verb> <base_of_fire_phrase> <location_prep> <engagement_loc> <open_fire_verb> <on_order>

<set_up_verb> <base_of_fire_phrase> <location_prep> <engagement_loc> targeting <on_prep> <enemy_loc>

<unit_nom-not_det-sing>

<unit_n-not_det-sing> <location_prep> <engagement_loc>

<suppress_by_fire_command>

<basic_suppress_by_fire_command> <location_prep> <engagement_loc>

<unit_nom-not_det-pl>

<unit_n-not_det-pl> <location_prep> <engagement_loc>

<unit_nom-not_det-num_all>

<unit_n-not_det-num_all> <location_prep> <engagement_loc>

<hasty_occupy_command>

<hasty_occupy_verb> <defensive_position_phrase> <location_prep> <engagement_loc>

<hasty_occupy_verb> <defensive_position_phrase> <location_prep> <engagement_loc> <bearing_mod>

<attack_by_fire_command>

<basic_attack_by_fire_command> <location_prep> <engagement_loc>

<set_up_verb> <base_of_fire_phrase> <location_prep> <engagement_loc> and <attack_by_fire_verb> <enemy_loc>

<set_up_verb> <base_of_fire_phrase> <location_prep> <engagement_loc> and <engage_verb> <enemy_loc>

<enemy_loc>

<enemy_phrase> <location_prep> <engagement_loc>

<unit_nom>

<unit_n> <location_prep> <engagement_loc>

<enemy_loc-mobile>

<enemy_phrase-mobile> <location_prep> <engagement_loc>

<unit_nom-pl>

<unit_n-pl> <location_prep> <engagement_loc>

<delay_location>

<location_prep> <line_loc>