Hello @a023615,

Translation of the death record:

Number 3617/.
Mannheim, on the 18th of November 1943.

The commercial clerk Albert Johann Josef Rettenmaier, Catholic, currently a private in the 3rd Company Panzer Corps Intelligence Department 448, residing in Mannheim, Draisstrasse 54, was killed in action on 2 September 1942, hour of death unknown, in Gawrilowka in the eastern theater of war.

The deceased was born in Mannheim,
(Civil Registration Office Mannheim, no. 792/1921).

Father: Albert Rettenmaier, residing in Mannheim.
Mother: Maria Johanna Rettenmaier, née Bauer, residing in Mannheim.

The deceased was not married.

Registered on the basis of a written report from the Wehrmacht Office for War Losses and Prisoners of War dated 12 August 1943, as well as our own investigation.

The Civil Registrar, by proxy: [signature].

Cause of death: killed in action.

Marriage of the parents of the deceased on 27 April 1920 in Mannheim.
(Civil Registration Office Mannheim, no. 888/1920).

Translation of the military document (with the caveat that I don't know what many of these numbers and abbreviations mean):

Family name and forename: Rettenmaier, Albert Johann Josef.
Above this:
I/5-14306/43
G-C 114/0086
+ [= deceased]

Born on: 7 March 1921.
In: Mannheim.
District: [blank].

Troop unit: 3rd Company Panzer Corps Intelligence Department 448.

Replacement Troop Unit: N. E. A. 33. Identity number: —927 ?/N. E. A. 33.

Rank: [blank].

Day, hour, place and type of loss:
2 September 1942, [in]? Gawrilowka.
Killed in action.

Original casualty list no: 9.