unite for (someone or something)
To join or combine (with someone or something) for some particular task or action. Military forces from the two countries united for an attack against their neighbor to the north. Our two companies are uniting for a revolutionary new service to our consumers.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
unite for something
to join together for some purpose. All the forces united for the attack. We will unite for a great party.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.