I found the following on youtube that some people might like:
The Battle and Fall of Przemysl (USA 1915) has film clip of Austrian 30.5 howitzer being transported set up and firing among other things
Fall of Przemyl wnv. and Nicholas II in Przemysl (1915) the former looks like has some of the same film clips from The battle and Fall of Przemysl. Note Nicolas IIs car is a 1909 Delaunay-Bellville SIM . He visited this place in April 1915.
For More on Nicholas II cars go to alexanderpalace.org see the section Alexander Palace Time machine subsection The Imperial garage The Tsar and His cars
