The phrase "as a first assignment" is correct and usable in written English.
It can be used when introducing an initial task or project that someone is expected to complete.
Example: "As a first assignment, I would like you to research the topic and present your findings to the team."
Alternatives: "for your initial task" or "as your opening assignment".
However, no charge shall be made for transportation expenses when a CBP employee is reporting to as a first assignment, or leaving from as a last assignment, a place where he is regularly assigned to duty.
As a first assignment, Mr. Caulfield sent Mr. Ulasewicz to Chappaquiddick, Mass., to find out exactly what Senator Edward M. Kennedy had been doing on the night in 1969 when Mary Jo Kopechne, a former campaign aide, drowned after the car in which they were riding plunged off a bridge.
No charge shall be made for transportation expenses when a CBP employee is reporting to as a first daily assignment, or leaving from as a last daily assignment, a place within or outside the port limits where he is assigned to a regular tour of duty.
Though Mark Hughes's side could only draw their first game, a visit to a promoted side – let alone one as accomplished as Middlesbrough – is a difficult first assignment, and City should expect a difficult afternoon.
If you can, do start browsing the readings as the first assignment for the course will be due Monday, January 25.
John's basketball game on Saturday as his first assignment with CBS, which he officially joined yesterday after 25 years with NBC.
As in the first assignment, we give you some of the code you need; your job is to complete the system and enhance it.
He still smarts when he remembers how, as an eighth grader, he failed an assignment to deliver a one-minute presentation.
As a student teacher my very first assignment was a struggling school in a dense and very poor neighborhood in New York City.
He had come to the studios from watching the Nigeria game in his room at the luxury Mandarin Oriental Hotel, off Hyde Park, armed with two sheets of scrawled notes, as eager as a cub reporter on his first assignment.
But even as I was slogging through my first assignment as a multimedia producer, something else happened.
