I'm not sure about your title for this post because it is not '
Another Military Museum'
it is
THE Military Museum of Austria (Heeresgeschichtliches Museum – Militärhistorisches Institut)
This is the website
https://www.hgm.at/en
I spend a whole day there when we visited Vienna in 2014, well work the time spent there, and one of the best military museums in Europe.
John