Part of IG Farben, an industrial conglomerate initially for paint but ultimately for most materiels involving some sort of chemical process. Higher echelons received their own trial after the war. Involved in pretty much anything and everything.

Manufactured a variety of artillery pieces.

Aircraft. Merged with various other companies after the war and is today part of EADS through DASA after they bought Messerschmitt-Bölkow-Blohm.

Halftracks, trucks, tanks. Makes busses and trucks nowadays.

Engines for tanks, aircraft, and - notably - submarines.

Tank prototypes of ridiculous proportions and various military jeeps.

Tanks. Most notably the Tiger series of heavy tanks. Also various aircraft and rockets.

Infamous for massive use of forced labour.

Part of IG Farben, an industrial conglomerate initially for paint but ultimately for most materiels involving some sort of chemical process. Higher echelons received their own trial after the war. Involved in pretty much anything and everything.

Degussa is rather notorious for being the company that produced Zyklon B - the agent used in Auschwitz for the gas chambers - and also being the ones who coated the Holocaust Memorial in Berlin to resist graffiti. Talk about irony.

Tank engines, most notably Panther and Tiger tanks. Part of Daimler now under an obscure name I can never seem to remember.

Aircraft, with a similar area of expertise as Messerschmitt (but more conventionally based than the jetpower-headed Messerschmitt). Now EADS, same story.

Jeep-like cars for military use.