He stayed at Vinohrady Theatre till the end on the 2nd World War.

[3] During his time at the Vinohrady Theater, Salzer has directed over 120 plays by world and Czech authors (incl.

W. Shakespeare, Oscar Wilde, Carlo Goldoni, G. B. Shaw, F. Schiller, Stefan Zweig, Jiří Mahen, J. K. Tyl, Viktor Dyk, V. K. Klicpera, etc.

He was one of the founders of the Theatre Faculty of the Academy of Performing Arts in Prague (DAMU) together with Jiří Frejka, František Tröster and Josef Träger.

Salzer was also translator of theatre plays (e.g. Stefan Zweig: Ovečka chudých – Das Lamm des Armen, Fritz Hochwälder: Tlustý anděl z Rouenu – Boule de suif, etc.