I have been looking for further comfirmation of my own statement in this regard.jb wrote: upon further study into the FM,I came across some info regarding the MTLB hauling the 120mm mortar. It states that there are some reports of 120 mortars "put upon" the MTLB. Don't know for sure if they fired it while it is on the back deck or just threw it on there to transport it,kind of sketchy.
Also the battery was compossed of 2 platoons. I guess the platoon size depended on if it is a 6 or 8 tube battery. There are also 5 low powered radios to the battery, and an FO section of 4 individuals. Don't know if FOs went seperate ways or not?? just don't know...
There are several references available to both 120mm mortars and 82mm "Vasilek" auto-mortars being mounted on MTLBs. But these were as often as not lash-ups in Soviet service. Hungary (?) did produce a 120mm mortar-carrier varient of the MTLB, but it was not used by the Soviets.
I was not referring to mortar-carrier mods, nor to piggy-back lash-ups. Rather, just to the application of the MTLB as a prime mover. It was initially designed to serve as a tractor for the D-30 122mm howitzer. I have the impression that it also served as tow vehicle for the BMP motor rifle regiments. In general, my impression is that the tracked (mech) rifle formations upgraded from the BTR-50 to the BMP. There was a version of the BTR-50 which carried the 82mm mortars for the rifle regiment. WIth the move to BMPs, the mortar company moved to MTLBs.
First was the need to balance the mobility of the forces. Wheeled tows were for wheeled APC-equipped forces. Infantry in tracked carriers needed tracked tows for their support weapons.
But the biggest reason for the creation of the BMP, and so also for the move to the MTLB as a prime mover, was the need to provide forces for an NBC-contaminated battlefield. The whole Soviet concept of the MICV (mechanized infantry combat vehicle) was to give a means for infantry to accompany and fight with the tanks when they could not de-bus due to contamination of the battlefield. This was also the primary motivation behind moving from towed howitzers to the 2S1 and 2S3 SPGs (contrary to assertions of NATO counter-battery capabilities). Even though MTLB-mounted mortars could not deploy on contaminated ground, they could at least traverse it. Truck-mounted mortars could not.
That was my impression, gained over 30 years of reading and studying Soviet theory. Now ... well, I'm not so sure anymore. I have been chastized many times about not relying on cold war era sources and perceptions of the Soviets. So I am looking for more recent sources to confirm my notions. Quite honestly, since the question was raised here, I have not been able to find reasonably current sources that validate my assertion. At least, not yet. Still looking.