Does the rank title of a unit affect sth?

[grayde]

Since there is the recycle mode for this game, we can keep the rank of some units and assign these rank-titles to the new tanks.Then, very spontaneously, I kept doing this recycle process, which cause a pain that I hav to save any tank during battle or the title will long gone.
So the question is whether the rank really affect sth like attack power or accuracy or else? or it's jus a title-system so tha we can feel the game as true army for battle?

[Wolftrak]

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