Lonestar created this document many years ago but it's still relevant for designing (and modding) campaigns.

Create an external DCG campaign.pdf

Thank you so much! 

Two small things I've just discovered creating campaigns.

You can change the name and behaviour of planes depending of the country for which they fly. For example, if I copy and paste the carachteristics of a plane, but change the nationality

TBF1                           TBF-1 Avenger                       un 1 4 0 194112 194406 none                           TBF-1                               TBD1                           4000 Meters  360.00 kph  800 km      360.00 kph  
TBF1                           Avenger Mk.I                        rn 1 4 0 194112 194406 none                           TBF-1                               TBD1                           4000 Meters  360.00 kph  800 km      360.00 kph  
TBF1C                          TBF-1C Avenger                      un 1 4 0 194207 194412 none                           TBF-1C                              none                           4000 Meters  360.00 kph  Default     360.00 kph  
TBF1C                          Avenger Mk.II                       rn 1 4 0 194207 194412 none                           TBF-1C                              none                           4000 Meters  360.00 kph  Default     360.00 kph  
TBM3                           TBM-3 Avenger                       un 1 4 0 194406 194612 none                           TBM-3                               none                           4000 Meters  360.00 kph  Default     360.00 kph  
TBM3AVENGER3                   Avenger Mk.III                      rn 1 4 0 194212 194612 none                           AvengerMkIII                        none                           4000 Meters  360.00 kph  Default     360.00 kph  

If the TBF1 is flying for the us navy, they will be refered to as 'TBF-1 Avenger'. 'A TBF-1 Avenger crashed near Location'

Now, if the same plane flies for the royal navy, it will be refered as 'Avenger Mk. I'. 'You must escort Avenger Mk.I to Location'. This might mean that you can apply different speeds, heights and roles for different planes. Say, P_47 as fighter for RAF and as GAttack for USAAF, or something like that. One of the first questions I made here was if there is a way to restrict role depending on the country and you totally can. I was refering to the Avenger, specifically, so I was asking if it was possible to make the British avengers to be GAttack and the American Avengers to be only torpedo bomber. Well, no, because there isn't a class 'Only torpedo bomber', but you can make Polish Il-2's level bombers and Soviet Il-2's GAttack.

 

 

Other thing I discovered is that if you don't have an airfield because you only have carriers, you might need to add an airfieldrestrictions.dcg file to your folder. Doesn't need to have anything written on it.

That's interesting.  It's been so long, but maybe I did use the plane's name as the primary key rather than the ID....

My guess is that is a compound primary key: code and air force, because everything else depends on those two. Name should be a non-primary key because it depends on code and air force and nothing depends on name. I believe that hypothesis  should be falsifiable using two rows using the same name and code, and start campaigns a few times, using different orders and different nationalities and see what happens.

I really should check the code, but it could very well be code and nation.  

Hi gents...is the PDF above at hand to post again?i am messing around to add an airbase on the Normandy map, and i believe that document contains the intel i seek.

Nevermind... need an acc't and logged in to acces the PDF in question
grabbed a copy, reading!

oh, and...
2022 for the win.
1946 is still great - two decades after the beginning of the saga

Hi,
This guide attempts to explain, using the example of two small campaigns, how to create a DCG campaign from scratch!
The reason to make this guide was the impression that people like to make a campaign but wouldnt know how to start and what to do to make one!
I hope this helps a bit!

In English (PDF): http://www.mediafire.com/?lqwwpj491bp33l4

In German (PDF): http://www.mediafire.com/?fzq7augnx87s317

Have fun!

There is also this old thread where someone made a campaign from scratch, but also add some plane to dcg for example

Dont know if its still up to date

https://www.mission4today.com/index.php?name=ForumsPro&file=viewtopic&t=7876&finish=15&start=0

Skimming the old thread at Missions4Today, it seems fairly up to date.  The file format hasn't changed very much in thirteen years.  The ship name file might be newer, but it's fairly obvious how to use it.