Bernhard Kast- Bernhard "Military History Visualized" Kast Bernhard Kast is known on YouTube as Military History Visualized, a channel that attracted over 740 000 subscribers and 144 million views. Bernhard has a M.A. in History and M.Sc. in Computer Science bothfrom the University of Salzburg Austria. - Christoph "Military Aviation History" Bergs Christoph Bergs manages the channel Military Aviation History counting 360 000 subscribers and 66 million views. Christoph has a M.A. in History and Int. Relations from Dundee University. He is currently a PhD Candidate at King's College London. Read More Read Less