first what your gonna wanna do is pick one chasis.....not all three or two just one chasis
next your gonna want to have your missle structure built and spams ready to fly
once you have your missle structure built this is what you do, make ops near very powerful colonies(say they are for gates/radars watever make sure they dont get taken) and then turn into silos, you will then want to spam the colony to see what is on there
once you do so you will go to the battle simulator and run a few simulations. what i do and i highly prefer is to bring just enough armour to the battle so that all the armour dies and your range gets the experience.
if you are trying to hurry and rank up your units then you should go for people who just came to spam the whole era, easy kills and easy experience right on the table.
anyway never let your armour live within this transaction because they will just take space and have experience on them(not saying its bad but you really want your range with all the experience)
side note: just because your units have hella experience on them doesnt mean they are invincible......so do not try and take on whole armies(even tho in some cases it will work) also make sure to have nukes everywere so that you can easily reach anyone in ur perimeter, once you get your r5 tho and have nukes your set for the era
have fun and play safe
I really hope this helps a few people out ^___^