Tunisia, 58th field, what did they use?

I'm at a very basic level in my research into 13th May 1943, near Enfidaville. My father was a lieutenant in the RA and his letters state that he was shouting "fire" into a telephone until the very last, shooting at hills near Enfidaville where the last of the Axis were holding out. I want to recreate the scene in detail and as I said am starting from a position of great military ignorance.

What guns would he have been firing?
How was this done?
What kind of shells?
What would their range have been?
If he was in a command post shouting"Fire!" what position would he have had in the chain of command (who told him to cease fire, who conveyed information from observations posts etc.) ?
What were the other roles associated with the guns...
How far would the command post be from the guns, etc.

I have a link to an excellent site BRITISH ARTILLERY IN WORLD WAR TWO and am working through it. Any details, clues or resources very welcome.

I might as well quote:
"For the last few days our guns have only paused in their firing for very short periods. We heard of the fall of Tunis and Bizerta & of people surrendering here and there & predictions of the collapse but still we went of firing. Eventually with my voice gone through shouting I had to use telephones to each gun from my Command Post.
This morning we were told that it was unlikely we would fire up to 12.30 because a temporary Armistice had been called on part of the front in order that terms might be discussed. Our O.P. was reporting scores of white flags & hordes of xxxxx? coming in. We could see these ourselves in all sorts of transport and on foot coming down the road, the Italian sometimes pleased sometimes dejected, the Germans prevalently cocky. But nevertheless all fighting hadn’t ceased & Jerry had a last fling with a minerwerfer – a rocket gun which fires half a dozen shells at a time. These things are pretty lethal and kept us in our holes when we were not firing back. About an hour from the end one of them landed slap in a slit trench and killed two. This is about a record for bad luck. And then at last about lunch time I had the pleasure of shouting “Cease Firing.” We moved out of action about 4 in the afternoon. We went back through Enfidaville which seemed a pleasant little village that had been knocked about instead of the dreaded hot spot to be avoided. So here we are now just south of Enfidaville."

 

Hi

You could do worse than look in the regiments war diaries at the National Archives. For even more detail there may be Battery diaries if you know which one he was in?

WO 166/1488 58 Field Regiment 1939 Sep-1940 Mar, Jun-1941 Dec
WO 166/6984 58 Field Regiment 1942 Jan-Apr
WO 167/486 58 Field Regiment 1940 Apr-May
WO 169/4588 58 Field Regiment 1942 May-Dec
WO 169/9487 58 Field Regiment 1943 Jan-Dec

Cheers
Andy

 

Thanks, Andy. Have sent a PM.