The AH-IV was a Czechoslovak-designed tankette used by Romania, Sweden and Iran during World War II. The Romanians signed a contract for 36 AH-IV-R, as they were designated by ČKD, on 14 August 1936, including one prototype to be delivered in two months and the entire order in seven months. These deadlines were unable to be met as the Romanians demanded many changes, which all had to be made on the production line because ČKD had initiated production of the entire order before the prototype was accepted. Designer M Bergman
