Hello,
I am not a specialist of thing, yet I have read that for most ATRL it is impossible to fire indoor unless specified otherwise.
I suppose this is the same thing for TOW even for some canon.
Do you have any rationale for that?
Indeed, there are large differences. The problem is that the lines blur, e. g. the SPG-9, a widely used Soviet-made recoilless rifle, only has a small charge eject the warhead around 20 m downrange, at which point a booster rocket will kick in. Unfortunately, recoilless rifles aren't covered in the base game at all, though they're likely to become extremely important during the Twilight War, because of their ease of production; both for the weapon system and for ammunition.Also note the difference between recoilless (countermass) weapons and rocket launchers. The propulsion principle and thus also the backblast phenomenon differ.