Send in soldiers until the other guys run out of bullets. Then you've won.

They don't do that any more.

Send in allied guys using your bullets until the other guys run out of bullets.

One of the early Donbas leaders was involved in Groznyi and published concerning the proper strategy in Chechen. Better to kill a thousand civilians than let a single Russian soldier die. Groznyi was leveled. Oddly, apart from a few murmurs here and there, nobody much gave a damn. We had truly important things to worry about. (Of course, another actor that came out of the battle over Groznyi was Kadyrov, a Chechen warlord in tight with Putin and who sent a fair number of fighters to kill those nasty Euro-fascists in Ukraine. Russians provided firepower. Proxies on the ground did the actual shooting with small lead slugs.)

That pretty much sums up Russian/Soviet views since WWII, whether in Central America, SE Asia, Africa. Even in eastern Europe they tried this, relying on non-Russians or Russian volunteers, often deplorables in both categories, to fight.

but the simple explanation is right on point. Good link, thanks!