I've been messing round with a Map idea and been using the Entity:

env_explosion_ins

to give the impression of Artillery going off. If I load this Map up in regular INS, all the options work (Smoke, Flares, RPG/C4/AT4/Grenade explosion) but if I load it up with the Day of Infamy Theater only one type (Vehicle explosion) which doesn't Damage players seems to work.

Any way the DOI devs could add this functionality in?

https://www.youtube.com/watch?v=AIMSxbDtoKs

Basically, that doesn't happen if I load up DOI using the same Entities