Have you ever noticed that the U.S. Army uses somewhat odd words to define how individuals are positioned in its military hierarchy? Many of them are words that have entirely different meanings in other contexts.
For example, in civilian life if you can have a General idea that something is wrong, then you can have a Private discussion about it. Especially if it has become a Major issue.
OK, I admit that these are rank puns. Possibly deserving of corporal punishment.
These puns are so rank they belong in the toilet. They should be loo-tenants.