The category "<platoon_type-not_creatable-pl>" can be expressed as follows:

<platoon_type-not_creatable-pl>

<platoon_echelon>

<platoon_noun-pl>

<specific_platoon_type-not_creatable-sing> <platoon_noun-pl>

<specific_vehicle_type-not_creatable-sing> <platoon_noun-pl>