Russia
And the winner with 15,398 tanks and 5,792 armored personnel carriers is Mother Russia. With around 766,055 soldiers, Russia’s army might not be the largest, but it is generally well trained, with many of the professional soldiers having combat experience.
It is also important to note that Russia practices mandatory conscription. Much of Russia’s military technology comes from the Soviet times, but there has been a huge push to modernize, as a result of the Ukraine war.