Gogle is your friend. Simply look up the name. It is.a simple man operated mortar.
Yeah, I also searched on Google several times, but I couldn't find a satisfactory answer...
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Okay... That's a mortar for infantry support... 82mm too !!
I guessed it was a mortar to some extent, but I wasn't sure.
It will now be replaced by a similar object, ArtilleryCY6$Mortar_80mm.
Thank you for letting me know.
PS : The size of 'CY6$Mortar_80mm' fits perfectly with the trench for 'BM82_1937' designed by the campaign maker. So, for users with a lower BAT version who meet the object 'BM82_1937' in any mission, please refer to this.