First vehicle that was added to transport class is Ural-375D. It’s a general purpose 6x6, 4.5 ton truck with top speed of 76km/h. Ural-375 can transport troops, tow artillery pieces or trailers with max weight of 10t. It also severed as a main platform for BM-21 rocket artillery.
Productions run for 30 years from 1961 to 1991 with many still in service in former Warsaw Pack countries.
You could check that short video on how it work in War Cabinet
Importance of highly mobile units and combined arms was recognized since the WWII
Ability to quickly move man, equipment and supplies is critical for modern warfare. In order to quickly reinforcement’s key positions or to exploit gaps in enemy defense one would need high mobility.
Trucks become the workhorse of the army motorized infantry, tower artillery, logistic and supply units.
Now we have that included into the game to be used for your advantage or to be surprised by quick enemy relocation.