The inquiry to determine whether there is enough evidence to warrant a trial in Sub-Lt. Jeffrey Paul Delisle's case will be held Oct. 10 and 12.
The provincial court also reserved Nov. 2 and 9 as possible dates.
Delisle faces a breach of trust charge and two charges of passing information to a foreign entity that could harm Canada's interests.
The 41-year-old has yet to enter a plea, but he has elected to be tried by a judge and jury in Nova Scotia Supreme Court.
He was denied bail in March and has been in custody at the Central Nova Scotia Correctional Facility in Halifax since his arrest in January.