The role of an attacker is the most beautiful role in football. The attacker has to mark the goal. An ideal attacker must be sharp, opportunist and good in one by one. A number of failures are forgiven if he concretise most of his occasions.
Some attackers can have places far from the middle of the ground, like wingers we have an attack with 3 or 4 players. Their role is then to work around by the sides defense, in order to address the ball to other attackers or to goal. They must concretise good actions and transform it into goals. The center-forward is the player who touches less ball in a team, that also why he is most supervised by the defenders.

In the modern soccer, which tended to reduce the number of attackers to two, even only one. It is not possible to be effective with an attacker against four defenders, and such a device imposes a support for the remainder of the team.