No need for an FO. Mealtimes are set normally timeblocks of about 90 minutes - you could vary it a bit, but not that much
GPS is comercially available. the bad guys have the capability to know exactly the coordinates of their chosen FP.
They can figure out the range and what elevation and azimuth would be required, pre cut the charges on a mortar round to save time
When they set the tube up they wouldn't even need a sight. Just compass azimuth lay with correct elevation.
Drop one - do a 1/4 turn on the azimuth wheel. Repeat that 4 times you get a good spread and are running before the 1st one hits the ground.
Rockets are even easier. Set a 122 up with two sticks crossed in an X. Adjust elevation by moving the sticks. Use compass azimuth lay technique to get center sector on your prospective target
Put a chemical time fuze on it and be in the next county before it launches.
BIG CEP (Plus or minus 500 meters) but you'll probably get it inside the perimeter more often than not.
They do this to our guys over there every day, most times the rockets don't hit anything. Last time I was in Baghdad we got rocketed every day for a week and no one got hurt
Occasionally they get lucky. Damned shame - a bit more to the left or right and it probably would have landed outside a blast wall (never been to that Mosul mess hall)
God rest the souls of those troops and comfort their families
Qatar-6
Be Seeing You,
Chris