Even without combat losses, war is hell on equipment. Decades of war in the middle east (with minimal combat losses) wreaked havoc on our equipment, be it air, ground or naval. On top of that, each loss means Russia's remaining equipment must work at a higher operational tempo. It wears out faster, requires more maintenance and suffers non-combat attrition at a higher rate. The readiness rate of remaining equipment falls. Sanctions add to this effect.
In some ways, war has the same effect on men.
“In some ways, war has the same effect on men. ”
Ouch.
That is one of the things I most resent about Putin - putting so many people through this.