commend (someone) for (something)
To compliment or praise someone for something that they have done. I have to commend you for your extraordinary bravery in a dangerous situation. I'm sure all of the people you rescued from the fire see you as a hero.
commend (one) to (someone or something)
To speak favorably of someone to another person or group. I commended Jeff to the award selection committee because his extraordinary bravery in rescuing all of those people from the apartment fire deserves to be recognized.
commend someone for something
to praise someone for doing something. The committee commended Ralph for his good work.
commend someone or something to someone or something
to recommend or speak well of someone to someone or a group. I commend Walter to your organization. He would make a fine employee. We commended your organization to Martha, who may wish to become a member.