Fellas,
This is my opinion only:
I have three FPS:
Call of Duty, Call of Duty United Offensive and Medal of Honor: Pacific Assualt, I had MH Warchest and gave it away too much like an arcade game to me. Of the three Mentioned the most realistic has got to be MHPA. It's realistic setting a plain killer, not yet mastered. It got a bad undiserved rep from the MH players.
I have three tactical,
Steel Panthers World at War, Combat Missions: Barbarossa to Berlin and Afrika Corps. SPAW for thier PTO scenarios and Campaign play, Fore serious tactical at Battalion and Company level, Combat Missions. I wish they had a PTO add-on.
For grand stratedgy War in the Pacific and War in Russia.
Simulations, The old Dynimax Aces collection, Silent Service 2, Silent Hunter commamd edition and Silent Hunter II, and PAW1942.
RTS I ahve are Total War serries of Shogun, Medeivel and Rome.
Right now these are shelved. Time now spent in FB+AEW+PF Simulation.
These may be shelved for years! This one is worth playing on line. Too many cheaters in COD and MHPA.