A military secret is secret information that is purposely not made available to the general public (and hence to any enemy) by the military in order to gain an advantage, not reveal a weakness, avoid embarrassment, or to help in propaganda efforts.
Most military secrets are military in nature, such as the strengths and weaknesses of weapons systems, tactics, training methods, number and location of specific weapons, and plans.
Some involve information in broader areas, such as secure communications, cryptography, intelligence operations, and cooperation with third-parties.
By the way, the military spending structure dictates to Russia a foreign-policy course that is entirely different from the one proclaimed by the country's leadership.
It is not a secret for the West.
Besides, the veil of secrecy and lack of details on the military budget make it difficult to monitor the spending of its funds (the numerous scandals of the last few years are evidence that military budget funds are not infrequently misused).
A militarysecret is secret information that is purposely not made available to the general public (and hence to any enemy) by the military in order to gain an advantage, not reveal a weakness, avoid embarrassment, or to help in propaganda efforts.
Most militarysecrets are military in nature, such as the strengths and weaknesses of weapons systems, tactics, training methods, number and location of specific weapons, and plans.
The phrase "militarysecret" has been replaced in governmental language by the doublespeak phrase classified information.