Charlie McGlade, a printer from Belfast, was the architect of the idea, and Northern Command was formed in 1939 taking responsibility for IRA operations in the six counties of Northern Ireland and also County Donegal, while Southern Command took responsibility for the other 25 counties of Ireland.
The person responsible for the idea was Charlie McGlade, a printer from Belfast. In 1939, Northern Command was created to oversee IRA operations in Northern Ireland's six counties and County Donegal, whereas Southern Command handled the remaining 25 counties of Ireland.