Comments by "The Immortal" (@theimmortal4718) on "Ukraine Counterattacks With Modern Guerilla War Tactics" video.
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In the US, it takes roughly 6 months of basic training + 18 months experience to master skill level 1 infantry tactics. That does involve large exercises at least brigade level, in that time frame.
If he joined at 18, he's nearing 21 about the time he's qualified for the first nco promotion and probably is going to be entering his prime for a good 10 years.
If I focused on company tactics and below, I could shorten that time from 2 years to 1. Of course, a soldier doesn't need to be a master unless he's a leader. He just has to be competent, fit, intelligent, motivated, and recently well equipped. With the right training command in charge, you can raise a very good army in a year, but you have to start with good stock to begin with.
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