There is no Serbo-Croat language. Now there are Serbian and Croatian.

About Montenegro - they fall under Ottomans in 1499. They were some kind of theocracy, nut latter - vladika (archbishop) was ruler. And they want clan society, they were union of tribes (Crna Gora i Brda).

Officeres in Montenegro - the main was serdar - I think that's in rank of colonel. There wes also classical officer kapetan (captain).

About pictures - there is nothing on net. I'm searching but I found nothing. Maybe I have in some book? Who knows?