Forms of address between ranks

[GlenBanna]

I know that I will be told to use the search engine but I have, and found an long thread in which I found some of the posts confusing. I will try to keep my questions simple and they only apply to ww1. How would a private address a lieutenant and a sergeant? How would a lieutenant and sergeant address each other?Lastly were there situations where these three ranks would address each other informally? Apologies in advance for typing errors as Im walking the D Day beaches at the minute and trying to type into my iPhone.

I am trying to write a Semii fictional account about a machine gun company and want to get the dialogue right.

Thanks in advance

Glen

[GlenBanna]

Brilliant. Thank you very much MrSwan

Glen