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

<formation-formation>

<formation_setting> <formation_level>

<telegraphic_unit_command>

<formation_level> <formation_setting>

<formation>

<formation_setting> <formation_level>

<formation_command>

<set_attribute> <formation_level> to <formation_setting>

<set_attribute> <formation_level> type to <formation_setting>

<formation-subformation>

<formation_setting> <formation_level>