- ppt-online.org 137797On April 26, 1842, the fortress was ready. The fortress consisted of a citadel and three fortifications defending it with a total area of 4 square meters.
- en.topwar.ru 97315-nasha-pamyat-brestskaya-…The fifth fort was built in 1878 — 1888, capitally modernized in 1908 — 1911. Located in 4 km southwest of the Brest Fortress.
- realhistoryonline.com operations-battles/brest-…07.24.1941. As a result of combing through the fortress of Brest-Litovsk for the presence of surviving enemies, only 7 dead Russians were found.
- starforts.com brest.htmlBrest Fortress' front gate today. In 1830 Russian general K.I. Opperman designed the fort's first four-square-kilometer iteration, which was built from 1836 to 1842.
- goodmenproject.com learning/brest-fortress-…On 22 June 1941 at 4 o’clock in the morning the forces of the German Wehrmacht attacked the Soviet Union. The Brest Fortress was in their way.
- 34travel.me gotobelarus/en/post/brest-fortressThe Brest Fortress is strongly associated with the World war II: its beginning, the defense of the fortress, old writings on the walls and the huge monument.
- commons.wikimedia.org wiki/Category:Fort_I,_Brest…Media in category "Fort I, Brest Fortress". The following 4 files are in this category, out of 4 total. ... Category: Forts of the Brest Fortress.
- web.archive.org web/20111027191252/http://www.…In 1878-1888 there were built 10 forts more around the Brest Fortress. ... The second line of the forts was built. At a distance of 6-7 km from the Brest Fortress.