> "Secondment is the assignment of a member of one organisation to another organisation for a temporary period. The employee typically retains their salary and other employment rights from their primary organisation but they work closely within the other organisation to provide training and the sharing of experience."
Another form is “so and so is on secondment to [the new organization]”, as in “She is actually a naval officer, but is on secondment to the Air Force as part of an project to standardize repair procedures.”