The phrase "assign a special" is correct and usable in written English.
It can be used when referring to the act of designating something unique or specific for a particular purpose or individual.
Example: "The manager decided to assign a special project to the most experienced team member."
Alternatives: "designate a specific" or "allocate a unique".
Trump is yet to assign a special envoy for Sudan and South Sudan.
And there was some discussion about whether the police should assign a special detail to keep things moving.
It took a year before the EU agreed to assign a special task force to Athens to help deal with the problem.
The accusations of prison rape, first broached by the reformist cleric and presidential candidate Mehdi Karroubi, shocked many Iranians and prompted Mr. Larijani to assign a special parliamentary committee last weekend to investigate.
Secretary General Kofi Annan has decided to assign a special political representative to Iraq to improve lines of communication between Baghdad and the United Nations, the organization's spokesman said today.
"As a citizen and someone who was a judge on the constitutional law court for 18 years, I feel whenever I can raise my voice with the hope of being heard I need to do it, but I wouldn't assign a special wisdom and responsibility to writers".
Education Minister Shai Piron further added that that he was assigning a special assignment to the first graders this school year, which he noted wasn't homework but classwork.
Students are assigned a special committee chair upon initial enrollment.
Ms. Dickson Wright now is assigned a Special Branch officer by Scotland Yard.
He has assigned a special prosecutor from the neighbouring Hamilton County to handle the case.
The judge for Plunder Dome, Ernest Torres, assigned a special prosecutor to determine how the reporter got it.
