>

They use those people for close combat to discover machine guns and sniper positions. A human sniper decoy basically. 
There was a short interview taken with “Donetsk people militia” fighter during the siege of Mariupol who said literally this.
Soon Russian will mobilize the recently deceased. >

"grave digging and re-animation operations are already underway..." >

Never would have thought that necromancers of everything would appear in a modern battlefield. >

The year's young... just give it some time.  I'm fully expecting ABC Warriors to rise up at some point. >

'and now we'd like to go over to the Russian spokesperson...General Blackblood' >

The elderly and children are next. >

I think they have already been used up. >

What about the elderly disabled children? >

Nobody suspects the old youth to be deployed until it's too late :( >

“Go and give those Allied troops a BIG hug!!!!” >

If by mobilize you mean "turn into cannon fodder", sure. >

It still weakens the enemy lines, plus you get rid of people who are probably a net loss to your economy. >

If your soldiers are going to be dying in a trench from artillery fire, does it matter that they have bad knees or a heart condition?