Rubuta ci gaba don wannan sakin layi - Ya shiga cikin Yarjejeniyar Warsaw a ranar 14 ga Mayu, 1955 kuma ayyukan a cikin kawancen sun haɗa da Warsaw Pact Invasion
na Czechoslovakia. Tun farkon watan Mayu na 1968, Babban Daraktan Siyasa na BNA ya ƙaddamar da kamfen na farfaganda don bayyana wa sojojin abubuwan da ke faruwa a Czechoslovakia. An fara horar da sojoji nan da nan a farkon watan Yuli, kuma a ƙarshen wannan watan ana gudanar da shi a Bulgaria a ƙarƙashin kulawar jami'an Soviet. An sanya raka'a biyu da aka sanya (Rukunin 'Yan bindiga na 12 da Rukunin Artillery na 22 da Colonel Alexander Genchev da Colonel Ivan Chavdarov suka jagoranta) sannan aka tura su zuwa yankin Soviet, inda suka shiga karkashin umarnin Soviet. Shirye-shiryen soja da akida sun ƙare a ranar 20 ga Agusta, lokacin da Majalisar Ministocin ta yanke shawarar cewa ƙasar za ta shiga tsakani a Czechoslovakia.