And little 11 hex range 50mm mortars really had no fire control, as in little or no sights and no mortar plotting boards.
The 2 inch mortars we had in our platoon, that lived in the armoury as useless dead-weight, had but a white line painted down the tube, and no bipod as they were held in the firer's hand. There were better things the 2 warm bodies in the TO&E of the rifle platoon HQ assigned to it could do than tote that thing. (Good for setting the heather alight with smoke ammo though
!)
Where they may come in useful is in the defence - if you want to put your gold spots right in front of your defended locales as FDF spots.