укрепление znamená v Angličtina

fortification [fortifications]▼(the act of fortifying)
noun
[UK: ˌfɔː.tɪ.fɪˈk.eɪʃ.n̩] [US: ˌfɔːr.tə.fəˈk.eɪʃ.n̩]

reinforcement [reinforcements]▼(act or state of reinforcing or being reinforced)
noun
[UK: ˌriːɪn.ˈfɔː.smənt] [US: ˌriən.ˈfɔːr.smənt]