Leonid Gobyato
...that the Russian officer Leonid Gobyato is credited with having invented man-portable mine mortars?
...that the <a href="./Russia" id="mwAj8" rel="mw:WikiLink" title="Russia">Russian</a> officer <b id="mwAkA"><a href="./Leonid_Gobyato" id="mwAkE" rel="mw:WikiLink" title="Leonid Gobyato">Leonid Gobyato</a></b> is credited with having invented man-portable <a href="./Mortar_(weapon)" id="mwAkI" rel="mw:WikiLink" title="Mortar (weapon)">mine mortars</a>?