...so it turns out that proper bridging equipment and doctrine are a pretty important detail in land warfare! Who could have ever predicted this?!??
You cannot bullshit like this and no serious land army ever would.
Russia's army is a massive mostly untrained guerrila force being tasked with impossible operational goals that individuals at the bottom of the pecking order try to improvise tools to accomplish until they are inveitably slaughtered pointlessly from being forced to attack in a futile situation by higher ups themselves being pressured to bullshit.