The Effective use of Artillery in SP WW2

[Imp]

For close support, you may prefer the 1 hex radius (which includes all med and hvy mortars) but also includes the 4.5inch (115mm) gun. I believe the 4.5inch has greater chance of suppressing troops 1 hex away than the 8cm mortar for example. Or a 12cm mortar will better suppress troops 1 hex away than an 8cm, even though both have a 1 hex radius. So warhead size sort of plays a part without jumping to the next size blast circle.

You may well be right 4.5 inch is a rare beast compared to mortars & 105 122 155s so just never noticed the diffrence.