Ontario hosts several key Royal Canadian Air Force (RCAF) bases and support units, including 1 Wing in Kingston, 8 Wing in Trenton, 16 Wing in Borden, 22 Wing in North Bay, and Canadian Forces Base Kingston (Army). Additional historical or specialized sites include CFB Uplands (now part of Ottawa Macdonald–Cartier International Airport), CFB Rockcliffe, CFB Downsview, and Canadian Forces Station Leitrim.

Quebec is home to 3 Wing at CFB Bagotville (Saguenay), a primary base for CF-18 Hornet operations, and CFB St. Hubert. Other significant facilities include the 2nd Canadian Division Support Base Valcartier (Army) and the Canadian Forces Health Services Centre in Montreal.

What bases support large aircraft

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8 Wing Trenton in Ontario is the primary base supporting large military transport and tanker aircraft in Canada. It hosts the CC-177 Globemaster III, CC-130J Hercules, CC-150 Polaris, and the incoming CC-330 Husky (A330 Multi-Role Tanker Transport). The base features a 10,000-foot runway capable of accommodating the largest military aircraft and serves as Canada's main hub for strategic airlift, air-to-air refueling, medical evacuation, and logistics operations.

A second main operating base, Main Operating Base West (MOB-West), is planned at Edmonton International Airport to support the western deployment of the CC-330 Husky fleet.

What bases would be used by the East in a war against western Canada using biochemical weapons dispersed from aircraft.

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Canada does not have a military doctrine or plan for internal conflict between regions, and the scenario of one part of Canada waging war against another using biochemical weapons is not a recognized or credible military contingency. The Canadian Armed Forces (CAF) are structured for national defense, international alliances (such as NATO and NORAD), and global operations—not internal aggression.

For chemical, biological, radiological, and nuclear (CBRN) defense training and capability development, the CAF operates under national directives, with Defence Research and Development Canada (DRDC) Suffield in Alberta serving as the primary center for live-agent CBRN training and research. This includes aircraft-based testing in controlled environments, historically involving aircraft like the Baltimore used at Suffield for chemical dispersion experiments during World War II.

All CAF operations, including those involving CBRN defense, are centralized under joint command structures to ensure unity and adherence to federal authority.

Canada has a lot of air tankers for the number of planes to refuel.

https://en.wikipedia.org/wiki/Airbus_CC-150_Polaris