fortification in Bulgarian
fortification in Bulgarian
укрепване
The act of fortifying; the art or science of fortifying places to strengthen defence against an enemy.
усилване
The act of fortifying; the art or science of fortifying places to strengthen defence against an enemy.
укрепления
That which fortifies; especially, a work or works erected to defend a place against attack; a fortified place; a fortress; a fort; a castle.