The attached .pdf file of an INDIGO Jan 1942 memo states that Co.s B & C 21st Aviation Regiment ( I believe of the 1st Battalion ) were sent in January 1942 to Iceland to relieve the Marines already there. I obtained this declassified from a research trip to the NARA Archives at College Park, MD.

Memo_Jan_1942_Indigo.pdf

Monthly Organization Reports for HQ Co., 824th EAB, March-June 1944. Obtained by trip to NARA College Park, MD.

HQ_Co._824th_EAB_Monthly_Organztn_Reports__Mar-June_1944.pdf

Please see Co. C report 1 July 1994 near end of file. States 824th was drawn from 1st Battalion 21st Engineer Aviation Regiment. Obtained from NARA College Park MD.

C_Co._824th_EAB_Monthly_Organztn_Report__Mar-June_1944.pdf

824th EAB    A & B Co. Monthly Organization Reports spring 1944.

A_Co._824th_EAB_Monthly_Organztn_Reports_Mar-May_1944.pdf

B_Co._824th_EAB_Monthly_Organztn_Report__Mar_1944.pdf

Declassified ( as all above ) maps showing camp locations in Iceland. Obtained at NARA College Park MD

KIC_Document_5.pdf

I hope Slinky will see this, since his last post was made in 2012. I think you should contact him by private message too, because if his email is still the same, it will go directly to him. Fingers crossed. 

Marion,

 Yes, I PM'D him yesterday. I even found his address / phone # thru switchboard/whitepages.com, but since my Connecticut phone#s ( house and cell ) were not known to him, his phone terminated the calls.

I have considered waiting a couple of days and if nothing, I'll mail that 30 May 1944 sheet to him. His family might have to pick him up off the floor after he opens it …..

My Grandmother saved these envelopes and the cards in them sent by my Dad from Iceland.

Shows the 824th, which, like what Slinky 75 related, his Honorable Discharge shows something else ( since learned a Discharge shows the LAST unit someone was assigned to, not ALL ). My Dad's DD214 shows the 820th EAB, which is where he was placed for D-Day.

Mother's_Day_Card_Envelopes_showing_Company_B_824th_EAB_1943_19.pdf