if you want a warfare simulator i cannot recommend Red orchestra enough, and its mods darkest hour and mare nostrum. They are i dare say better simulators then infiltration.
red orchestra focuses on the eastern ww2 campaign between germany and russia, and the darkest hour focuses on the western campaign where british, canadian and american forces take the fight to the germans. Mare nostrum is the italian and africa campaign.
tank battles are very real, and so are the tanks. one feature which i like is the ability to rest your gun on any surface to give stability. and ofcourse the machine guns which are superb suppresive fire weapons, you do really keep your head down when an mg42 fires at you but it is advisable to watch out for richocheting bullets. The artillery is deffinetly lethal.
plus MGs overheat and the ones that have a barrel change ability in reality also have it ingame.
darkest hour mod is even better then red orchestra, it feels alot like band of brothers.