Meaning

• Mental focus.

  "Please direct your attention to the following words."

• An action or remark expressing concern for or interest in someone or something, especially romantic interest.

• A state of alertness in the standing position.

  "The company will now come to attention."

Meaning

• Used as a command to bring soldiers to the attention position.

• A call for people to be quiet/stop doing what they are presently doing and pay heed to what they are to be told or shown.