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

<unit_n>

<section_noun> <base_of_fire_phrase>

<unit_n-sing>

<section_noun> <base_of_fire_phrase>

<unit_n-not_det-sing>

<section_noun> <base_of_fire_phrase>

<bare_section_id>

<ordinal> <section_noun>

<section_type-not_creatable>

<section_noun>

<specific_section_type-not_creatable-sing> <section_noun>

<specific_team_type-not_creatable-sing> <section_noun>

<specific_vehicle_type-not_creatable-sing> <section_noun>