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| Subject | English | Russian |
| mil. | major air formation | авиационное объединение |
| mil. | major combat formation | крупное боевое формирование |
| mil. | major combat formation | крупное боевое соединение |
| foreig.aff. | major formation | объединение |
| mil. | major formation | соединение |
| mil. | major formation | оперативное объединение (Comment by Maggie: The word "formation" in English refers to an arrangement of something -- units, troops, forces, etc. It can not be used to mean "unit" and the phrase proposed is utterly and completely devoid of meaning.  wikipedia.org dimock) |
| mil. | major tactical formation | боевое объединение (Киселев) |
| mil. | major tactical formation | боевое соединение (Киселев) |