WWII German system of camps for PoWs

[Graham Mark]

I have taken on a small job re WWII where my lack of knowledge is hampering me.
The subject is a PoW in Stalag IX C.  He wrote to USA on 14 June 1940 to acknowledge receipt of a letter, so that seems much to early for him to have been captured during the German invasion of the West of the previous month.  Moreover his PoW number 64 is a very low one.  So I am wondering how and where he was captured.  I have no information as to the man's rank, service, nationality etc, but he has an anglo-saxon sounding name, Edgar Olver.
Please can someone offer some guidance - were the camps in Germany at this date separated into Luft, Stamm, Mar, etc?
If not there will be no telling where to look for this man's background.  I have wondered if he was aircrew, or a passenger taken off a ship (or rescued survivor), or a visitor/traveller interned in the early days of the war.
Your help will be appreciated.
Graham Mark

[Michael Dobbs]

Graham

Does this help:

The Eagle Squadrons were three fighter squadrons of the Royal Air Force (RAF) formed with volunteer pilots from the United States during the early days of World War II (circa 1940), prior to America's entry into the war in December 1941.

Taken from Wikipedia
[url=https://en.wikipedia.org/wiki/Eagle_Squadrons]https://en.wikipedia.org/wiki/Eagle_Squadrons[/url]
see also:
[url=https://www.rafmuseum.org.uk/research/online-exhibitions/americans-in-the-royal-air-force.aspx]https://www.rafmuseum.org.uk/research/online-exhibitions/americans-in-the-royal-air-force.aspx[/url]

In other words he could be an American in the RAF.

Mike

[Michael Dobbs]

Graham

I could be wrong - the name you gave does not appear to be on the memorial:
the Eagle Squadron Memorial in Grosvenor Square, London not far from the former American Embassy

[url=https://www.uswarmemorials.org/html/monument_details.php?SiteID=202&MemID=310]https://www.uswarmemorials.org/html/monument_details.php?SiteID=202&MemID=310[/url]

Mike

[Graham Mark]

Thank you Mike and thanks for a telephone call from Reg Gleave who has put me onto the man.
Olver EC, AB D-JX16033, ex AMC Rawalpindi, sunk by Scharnhorst and Gneisenau north of Faroes on 23Nov39.
37 rescued by the Germans and 11 by the Royal Navy.
Graham

[Michael Dobbs]

Graham

A good response there from Reg Gleave.

As I understand it the correct title for AMC Rawalpindi is Armed Merchant Cruiser HMS Rawalpindi - navy buffs please correct me if I am wrong!

Mike