Kammala jumla mai zuwa: An yi imanin cewa an yi amfani da bindigogi biyu a lokacin ayyukan Faransanci na farko don dawo da Fort Douaumont a lokacin yakin Verdun, yana jawo bindigogi hudu don kai hari na karshe. Wataƙila harsasai ba su da ƙarfi sosai da za su iya ratsa rufin sansanin. Sun kuma halarci Somme Offensive da hudu da aka yi amfani da a cikin
Yankin Champagne tsakanin Agusta 1915-Fabrairu 1916. An yi amfani da biyu a lokacin yakin Hartmannswillerkopf a lokacin 1915-1916.