No, this campaign is only the German one in West and East (not South).
You must buy the 4 other gog DLCs if you want to own all, but you need hundreds hours to play them. :)

I wonder why they aren't just selling Panzer Corps Gold so as to spare a bunch of confusion on the part of any potential customers?...
http://www.slitherine.com/products/647/details/Panzer.Corps.Gold

I started the grand champaign a few days(and i am in retirement=much time to play) ago...it contains the complete+ german campaign+what could be and it's not only the offensive like most other games. I finished the 5. map a few minutes ago and i am still at the 1.Subcampaign of the grandchampaign...or better said...i am still fighting poland.

I was too a bit offended by the dlc's first but the dl's i bought (africa+grand campaign) a really worth their money, nearly a game for themselvs and a huge one.

When I start the game, the game launcher says "Panzer Corps Gold" at least in the graphic.

And it appears that Slitherine is retiring all the DLCs and only having Gold from Feb 8th. At a price that's less than buying the DLCs en masse and claims of an improved UI. It is only £20.02 on Steam.

Perhaps the current GOG discount is less of a bargain than you might think...