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Hello Everybody
Trying to locate information on this Mexican national who served in the RAF from 1940 to May 17/18, 1942 when he was killed in action over Holland.

The RAF museum send me a radio interview that De Mier did for the BBC radio and from that interview and the documents I have on hand, I have made this timeline of his service in the RAF. need to find the ORB for No.141 Squadron Defiants to find out if he flew patrols from June to July 1940. Before a emergency operation put him out of service and missed the "furball" of 19 July 1940 when No.141 when up on its first contact with the Luftwaffe and came out badly.

In the radio interview he only mentioned the aircraft he had flown at that time "Defiant" "Bofighter" and "Havoc".

No.1 AAS Air Armament School RAF Manby 20 May 1940-15 June 1940
No.141 Squadron 16 June 1940?
Air Armament School dates unknown 1940-1941?
No.68 squadron 1941
No.23 squadron 2 July 1941 to 22 November 1941
No.418 RCAF Squadron 22 November 1941 to 17/18 May 1942

Any help would be appreciated to confirm this time line or be directed to the proper sources if the No.141 ORB is online etc.

thank you
Santiago A Flores