BTM-3.

This is coolbert:

Courtesy You Tube a video of the Russian trench digging machine.

Impressive! And as is relevant to the fortifications of the Russian army the Ukraine Conflict.

"Russian BTM-3 Trench Digging Machine"

"The Russian Army is deploying BTM-3s, fast-moving trench digging machines capable of digging ditches and trenches in soils ranging from sandy to frozen earth in preparation for the coming winter season."

"This is the first time such engineering machinery has appeared on video footage from the conflict zone. The use of these large numbers of engineering vehicles is necessary for the efficient and effective construction of defensive lines in a fraction of the time."

See the protection provided even a simple below-ground open trench the soldier laying prone in the trench during a bombardment. 

BTM-3 too I might think a big morale booster?

coolbert.