Czechoslovak fortification (1935-1938) 1 Exclude matching results defence of territory 1 Exclude matching results fortified lines 1 Exclude matching results fortresses 1 Exclude matching results obrana území 1 Exclude matching results opevnenie Česko-Slovenska, 1935-1938 1 Exclude matching results pevnosti 1 Exclude matching results pevnostné línie 1 Exclude matching results