Major is a rank that is given for a mid-level command officer (higher than the rank of Captain and lower than the rank of Lieutenant Colonel). In Canada, it is shown by a thick bar followed by a thin bar and again by a thick bar. In Great Britain it is represented by a single crown. In the United States, it is shown by a gold oak leaf. The pay grade for the rank of major is O-4.

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  Canadian Air Force major insignia

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