out of curiosity why do you say that? I assume those units can sharpen my skills because they are considered the best units. Am I misguided?
It’s a lot of propaganda. What really separates those units are the enablers/assets that support their war fighting functions. None of which are the type of things that are available in the situations I’m assuming you are referring to.
the type of things I believe you are referring to are basic Soldier common core task functions. Common warrior tasks and drills.
I mean ultimately once it is all said and done and you reflect back you will see Infantryman, Engineers, Scouts, Tankers, and artilleryman are all bringing something different to the fight.
your quick reaction forces are not meant to attrit the enemy and seize and hold land.
For the skill set you are referring to u will need to be in a variety of different units and different duty positions.