I posted as no-one else had commented in detail. Just one point I forgot to mention in last post I had to repeat the first mission to "unlock" the second (last) Kursk mission. I guessed this was the case but had to endure the ear bashing of artilliary again when I was impatient to get into Mission 2!!! Mentioned in case someone thinks its a bug for not showing up on the mission list immediately.
All the Best over and out - Morty