E.R. Campbell said:
You may recall that the first Canadian contingent to UNEF was supposed to be the Queens Own Rifles of Canada (QORofC) but Egyptian President Nasser objected, on the not unreasonable grounds that he would not be able to explain to his own people why a regiment that "belonged" to the same queen whose aemy had just invaded Egypt was now being sent to "keep the peace."
A very nimble Canadian Army general staff very quickly tasked the Armoured Corps, Signals, and the Ordnance, Service and RCEME corps to cobble together squadron/company sized units that were, of course, a real godsend to the force commander and that became the template for other UN missions, including the Congo, UNEF II and the Golan Heights.
There's a brilliant cartoon about it ...