A dynamic campaign generates missions on the fly, reacting to what you did on your last flight. (As per "EECH", or "Total Air War") My Old friend "IL2" on the other hand, has scripted mission descriptions at the start of each mission and strings a series of these together to make up a number of mini campaigns.
From Forgotten Battles on, IL-2 had dynamic missions. "Dynamic", as in "take a snapshot of the picture of the situation and choose an appropriate mission type".
This is no different from the mission generation system in Falcon 4, EECH, TAW or else with the only difference that IL-2's system works basically
turn based instead of real time. You and the AI fly their missions and the results influence the battlefield picture in the next one.
For example, at the start of my current campaign I was up against a lot of flights of LaGG-3s. My squadron mauled them time after time, so at one point the skies over the front were clear of LaGG-3s until the Russians got enough reinforcements to send up a flight of 'em again.
Over the course of 60 to 70 missions, the german ground forces managed three quarters of the way to the current map's objective, endured a counteroffensive, then counter-counterattacked and are now kind of bleeding dry because the opposing side has superior reinforcement abilities (as it was in the real battle).
Would I play the map again, in the same role and with the same aircraft, but decide to strafe everything in sight or do as bad as I could, the situation would be different. Not in the big picture (we're talking WW2 here and nothing fictional), but notably different locally.
This totally qualifies IL-2s campaigns as dynamic.
(I have to say though that I only fly with Lowengrin's Dynamic Campaign Generator in IL-2, but this program is nothing than a beefed up version of the original one, with more units, better calculations, etc...the principle remains the same though.)
With the advantage that the mission intervals (daily, although 2-3 per day would be a tad more accurate) are more realistic than in their real-time counterparts where you can fight non-stop 24/7 (e.g. F4 or EECH).
Strike Fighters works in the same way as IL-2, although I get the feeling that player successes there are a bit more influential for winning or losing than in IL-2.