Secret Weapons of the Luftwaffe, followed by European Air War, Their finest Hour, Hind and Il-2 for air sims.
Operation Flashpoint as an infantry simulator(if it's allowed) followed by M1 Tank Platoon(first one).
Aces of the Deep for sea.
I know more modern sims are better, more realistic blah blah, but SWOTL, EAW, M1, Op Flash, Aces etc. just had a magic at the time of release for me that meant spending countless hours on them that I haven't done with more modern titles.
__________________
|