join_forces has definitions from the field of work
[ verb ] (work) work together on a common enterprise of project


"The soprano and the pianist did not get together very well" "We joined forces with another research group"

Used in print

(R. F. Shaw, "The `Private Eye`"...)

Sam_Spade joins_forces with a band of adventurers in search of a priceless jeweled statue of a falcon ; but when the bird is found at_last , it turns_out to be a fake .