Slitherine

I picked up this DLC earlier this year and just finished the Normandy landings scenario. I captured 3 of the 4 primary objectives failing to take Cherbourg. I also achieved 3 of the scecondary objectives. The difficulty level was the middle one which I think is Captain?
At the end it indicated defeat and that the invasion was a costly failure. How many of the objectives are required to advance to the next scenario whatever that one is?

To win a scenario, it is necessary to capture or validate all primary objectives by definition

PS: otherwise there is a cheat code