You really don't want an armed Ukrainian private citizen to beat a military power house like Russia?
No training with a firearm, no tactical training.
Now we Americans are well armed and a heavy portion of those armed citizens in America do train for urban warfare .
Winston Churchill explained to Stalin and Roosevelt that the Allies needed to move carefully regarding the invasion of Europe. What would become D-Day. Among other things he told Stalin, was it took two years to really train a Soldier.
By that Churchill was right, it took two years for a man to stop thinking, and for all the Military behavior to be second nature. To be instinctive.
Stalin told Churchill it took five minutes in battle. Those who survived beyond that, were Soldiers. They had already learned everything they would need to know to fight effectively.
Stalin was right too. In five minutes of combat, the individual has learned how to think in battle, and has mastered the trick of staying down, seeking cover, and shooting at the enemy. He’s figured out how to reload his weapon while his hands are shaking. He’s heard bullets zipping by his head and knows the sound, the fear.
Stalin didn’t say but the other half of that truth is that a lot of people won’t survive for five minutes.
Handing a rifle to a Civilian and sending them out with a couple magazines to kill the enemy means that many of those people will die. Those who don’t will be good combat soldiers before the first day is done. They’ll have experience, and know how to fight, even if the terminology is foreign to them. They will understand the teamwork of the squad, at a level that a recruit in Basic doesn’t.
In war, unlike the rest of the time. You are often left with a lot of bad choices. A man much wiser than I called it Logical Insanity. The Logical answer in situation like that, would be insane in any other situation.
It is logical to let the civilians fight for their nation when you’re invade. It is insane to hand fully automatic rifles to civilians and wish them well in any other situation. But while you’re being invaded, the least worst answer is to give the rifle to Civilians.