"Field Guns In France" By H. Fraser-Tytler

[Rob Connolly]

I've trawled the forums and, whilst people recommend this book (deservedly so), I cannot find an explanation of a phrase the author uses.  He defiantly states that there is no glossary, which I don't really need given what I know about the Royal Artillery and field guns, apart from his use of "The danger angle".  It's used when his battery is firing in several different directions in early 1916 in the Vaux Valley.  Does it mean guns not being fired in parallel?  Or is there a more specific definition?  Any illumination gratefully recieved.

[IPT]

From "Field artillery training. 1914 / General Staff, War Office"

 

They are responsible that their guns are not fired when 
within the danger angle, i.e., the line of fire of any gun must 
not make a less angle than 45 degrees with a line joining its 
muzzle and the muzzle of any other gun. 

 

Various mentions;

 

https://www.google.com/search?safe=strict&sxsrf=ALeKk02knAPH1dQfcxSEVe78v8wBPXNu-A%3A1607040244537&ei=9HzJX-qlIPK78gKl3qugDw&q="The+danger+angle"++artillery&oq="The+danger+angle"++artillery&gs_lcp=CgZwc3ktYWIQAzoJCAAQsAMQChAeOgsIABDJAxAWEAoQHjoICCEQFhAdEB46BQghEKABOgcIIRAKEKABUN4TWJV3YP55aAJwAHgAgAGQAYgB7giSAQM3LjSYAQCgAQGqAQdnd3Mtd2l6yAEBwAEB&sclient=psy-ab&ved=0ahUKEwjq76i3g7PtAhXynVwKHSXvCvQQ4dUDCA0&uact=5

 

[Rob Connolly]

Thank you for that!   I'm on my lunch at the moment but will have a thorough nosey later on.