Initially development contracts were awarded to two groups of companies the Rheinstahl group (Rheinstahl-Hanomag, Ruhrstahl, Witten-Annen, Büro Warnecke) and the second group comprising Henschel Werke and the Swiss MOWAG company.
Kot vodja delegacije Narodnega sveta je 1. decembra 1918 v Beogradu pred regentom Aleksandrom prebral izjavo o združitvi Države SHS s Srbijo v Kraljevino Srbov, Hrvatov in Slovencev.