My work for early concept of KriegsFront Tactics project, did this 5 years ago (2020).
Kriegsfront Tactics took settings in mid 1970's coldwar era with twist of mechas as the warfare instrument.
Samosir Heavy is one of the faction, the idea was , this faction weaponized heavy mining equipment (convertible).
The game itself still in developing, but you can wishlist it here :
https://store.steampowered.com/app/1561740/Kriegsfront_Tactics/