The M84 was a Cold War era Yugoslav development of the Soviet T-72, upgraded with ‘western’ style sighting system and wind sensor.  The prominent wind sensor on the front-top of the turret is the giveaway identifier.

NATO video of M84 during wargame Combined Resolve, Hohenfels, Germany, September 2020:

Slovenian M84A4s in Hohenfels, Germany, January 2020.  They were acting as Opposition Forces (OpFor) for NATO wargames Combined Resolve-13.

Slovenian M84A4s during NATO wargames Adriatic Strike at Pocek Range in Postonja, June 2017.

U.S. Army video by Massimo Bovo, M84 live fire, June 2017:

Video report, U.S. Army explains why they like using former Warsaw Pact (Slovenia, being a part of Yugoslavia, was never part of Warsaw Pact), or other Soviet bloc countries, in wargames:

Hohenfels, Germany, June 2016.

Installing the Multiple Integrated Laser Engagement Systems (MILES) for wargames.  The MILES is essentially the world’s first laser-tag system, it is used on both people and vehicles.

The bracket strapped to the gun tube is for the charges that simulate the gun firing.  The amber light on the turret is the wound-damage/kill light, it flashes temporarily if you are ‘damaged-wounded’ and flashes constantly if you are ‘killed’.

NATO Exercise Allied Spirit-4, Hohenfels, Germany, January 2016.

Video report, Slovenian tanker explains why they are working with U.S. Army (USA), November 2015:

M84s on Hohenfels, October 2015.

Adriatic Strike exercise at Pocek Range in Postonja, Slovenia, June 2015.

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