The Danish Lutheran church still runs confirmation classes and youngsters are confirmed. It is a great day, more in a secular sense than the religious one, as it marks a progression out of childhood into young adulthood. Nonsensical these days, as 14-15 year olds still have many years schooling and dependence on their parents ahead of them.
There is no tradition any longer for confirmation as a prerequisite for receiving communion, or getting married, as there formerly was. As long as a child is old enough to understand the meaning of communion they may receive it.
The Catholic church still holds confirmation seeing it as marking a teenager's 16th year, at which time he or she is deemed capable of assuming responsibility for fulfilling their religious obligations - prior to this age, the responsiblity rested with their parents.
As far back as the late 19th century 1st communion became a completely separate ceremony, usually held for 7 year olds, who have attended preparation classes and made their first confession,
I think most churches have moved away from requiring confirmation before receiving communion, on the grounds that we have no evidence in the New Testament for Christ or his disciples using either a 1st communion or a confirmation ceremony.
The Orthodox churches give communion to all baptised Christians, crumbling the bread in the wine and giving it on a teaspoon to babies until they are old enough to chew the bread.