Phew! 8 or 9 games later, I finally beat the Exercise Tiger Mission. I love the challenge of this game (D-Day Dice). Naturally, there is luck involved with the dice, but there is a very big strategy component as well which is awesome!
I will admit, I did use the "easy" difficulty. Easy allows you to utilize all specialists (not just the ones listed in the book for that particular mission). So my next task will definitely be to use the specialists as listed in the book. I'm definitely still not quite ready to move on to the next mission... But I'm getting there!