Just some more on tank turrets being used for fortifications, Austria apparently had quite a few built into their Schleinzerwall bunker system.
Austria maintained a vast array of older tank turrets emplaced in fortifications. According to this site, Austria had: 48 75mm turrets (M4?), 24 85mm T-34 turrets (perhaps as many as 44), 56 83.4mm (20lb) Charioteer turrets, 143 90mm M36 turrets, 148 105mm Centurion turrets bought around 1980, plus another 226 105mm Centurion turrets after 1985.
This quote is taken from the Austrian OOB provided in the thread about Raellus' Austria sourcebook.
https://forum.juhlin.com/showthread.php?t=4178 Post #27 - however the link to the source of this info is now a dead link but the following link has some supporting information: -
https://www.unterirdisch-forum.de/in...tsching.15479/
The construction work on the bunker line, which was also called "Schleinzerwall" (Karl Schleinzer: Minister of Defense from 1961 to 1964; note), with its permanent structures and other fortifications, was largely completed by 1964. During the Cold War, this wall was considered first line of defense and bulwark for a possible attack from the east - specifically from Hungary. Between the Danube and Wiener Neustadt, a total of around 140 systems of different sizes and with different armament were built ...
The "Schleinzerwall" was built even before the spatial defense existed, as a reaction to the Hungarian crisis of 1956. Its construction established the permanent defense systems in Austria during the Cold War. These were built increasingly from the 1970s as part of the space defense concept. The facility on the Ungerberg was integrated into this concept and is therefore also a witness of this era .
Armed Forces - TRUPPENDIENST - Issue 4/2015 - Ungerberg Bunker - Relic of the Cold War
This quote is taken from the same site linked to from the first quote, page 2, post #26
https://www.unterirdisch-forum.de/in...g.15479/page-2