Perhaps by separating them with headings. 'Companies' at the top, then scroll a page or two and see 'Platoons'; so people will instantly know what formation they are looking at.
Another possiblity is using another layer of buttons. Click on Armour, then click on Companies, Platoons or Sections button.
Don't most people 'shop' this way anyway?
Headings may be easier than all the work involved in option 2 or 3.