Im about half way through the campaign... just finished the Sunderlands escort mission... it seems very accurate in some ways... the front lines, the battle around calais and dunkirk. I love how you captured the look of the distressed town with pillars of smoke rising into the air (something that many pilots commented on during the flights over dunkirk).
my only gripe really is all the airstarts and the spawning of all enemy planes in the air at random places (groups of planes appear outta nowhere, usually behind your group of fighters lol). the translations dont seem to cover all the the campaign several of the mission's briefings and debriefings have alot of russian in it and the prompts that pop up on the screen are sometimes completely in russain.
and on a side note I cant seem to find the orders to tell my wingmen to break off and fly for home.. many times now ive flown back to base with them in formation but when i go to land they stay right with me and crash into the ground when i land... its a bit frustrating.
but overall its a very worthwhile campaign!