The use of these tanks were pioneered by Frahm in Germany during the turn of the 20th century and they are often referred to as Frahm tanks.
US Satellite imagery of Syrian tanks departing Da'el | Tanks of Zen | Ironton Tanks | German tanks in World War II | Chieftain tanks of 14th/20th King's Hussars on parade with urban camouflage, Straße des 17. Juni | Chieftain tanks of 14th/20th King's Hussars |