Thanks for the translations. Added to the refrence pile. " the point is that comparing max ranges doesn't mean much unless you know what you're talking about." Weather conditions tend to be the larger factor. I never had to get exicited over barrel wear. Since our max range firing was usually in the Mojave desert in the summer we were noticably below the book quadrant elevation after the meterological corrections were made. High temperatures and a tail wind could give a suprising range boost. Of course January in Wisconson had the opposite effect.

Agree that met is usually the main factor, but the Mojave is also quite high I think (around 2000m?), this means the traj is going thru less dense air than lower altitude firing areas which also gives it a real boost. Much of Afghanistan is even higher.

I'd have to look up the atltitude for 29 Palms. It is up there. Air density - barometric pressure - is part of the Met. correction. Its been so long since I did it manually I cant recall all the variables on the worksheet. Temperature of propellant. Wind direction & speed at multiple altutudes. Barometric pressure. Humidity (?) Azimuth of fire in relation to the earths axis & altitude gave a correction for the earths rotation. Non met. items were: Muzzle velocity. Originally extrapolated from a measurement (extimate) of barrel wear & averaged for the battery. After truly practical MV measuring devices became available we had a accurate correction for each cannon. Projectile weight correction. Different models vary a from a few grams to several kilos in weight. Had I time this moring I'd look ll this up. My notes here suggest that between between highly favorable & unfavorable conditions (in the range I trained in) a 20% difference in range can be expected. Someday when I have a spare hour or two I'll get out my firing tables & confirm that.

Finally found the references Geoffrey Perret There's A War to Be Won P. 370 The 26th, 95th and 104th Infantry divisions were idled in Normandy in August 1944 because their trucks were taken away and sent the 21 Army Group to replace over 2,000 RASC trucks with cracked cylinders. Also referenced in 26 ID War Diary So it was too late for Goodwood...but it still hurt the 3rd Army. My bad...I'll back down

Does Perret indicate if the drivers were sent as well, or just the vehicals?

No indication.....