why is no-one mentioning Ghost Recon 1 + expansions?
SINNERS!
but seriously, GR had one of the best AI for its time ( IMO ) because i could send my team to places without having to babysit them personally. i just bring up the tactical map, give them waypoints, they go there on their own and engage threats very effectively. that was a real relieve from some other games. this gave me the space to use tactics ( multiple path approaches, etc ) instead of watching the friendly AI getting themselves killed praying 'no no, no dont go there please no... cmon, shoot them! cant you be more accurate! DAMNIT! ****ERS! their they went and got themselves killed again!'.
while still not making it over-easy. they could get killed ofcourse, if they got surprised ( wich usually means you were rushing them towards places ).
but GR1 and its expansions are the only GR games worth mentioning.
GR2 is console only ( wich ofcourse is a way down from good old pc-gaming thanks to the fact that console movement ****s balls compared to pc-controls ), and GR3 isnt great either compared to old GR. to scripted in my personal opinion. it isnt easy, you get killed pretty fast but not as fast as you would in GR.
You could also go for Hidden and Dangerous 2, or ofcourse Hidden and Dangerous 1 ( H&D1 is the game that made tactical gaming popular, despite many bugs in its first release.. that should speak for itself ).
and as mentioned, Operation Flashpoint and Armed Assault. although personally i like Armed Assault less, it feels different and the more modern weapons arent my cup of tea. the M4 feels really weak compared to OFP's m16.
And the old R6 games, up to Raven Shield. any game newer then Raven Shield blows and dishonours the R6 franchise. ( after RS the series went mainstream, simplified, actionised, hollywoodised, noobified, whatever you wanna call it. its just aint R6 anymore )