|Born||24 July 1890
Igló, Austria-Hungary (now Spišská Nová Ves, Slovakia)
|Died||2 June 1945 (aged 54)|
|Allegiance||Kingdom of Hungary|
|Commands held||IV Corps
|Battles/wars||World War I
World War II
On May 8, 1945 Heszlényi, along with his son József Heszlényi Jr., who served on the staff of his father, were captured by American troops. Heszlényi was then sent to a POW camp in the Soviet Union where he cut his wrists with a razor blade on June 2, 1945. On June 19, 1945 a military tribunal posthumously demoted and dishonorably discharged Heszlényi from the Hungarian Army.
- Commanding Officer 23rd Infantry Brigade, November 1938 - 1 March 1940
- Commanding Officer 2nd Motorized Brigade, 1 March 1940 - 1 November 1940
- Deputy Chief of Supply Bureau, Ministry of Defense, 1 November 1940 - 1 May 1941
- Chief of Supply Bureau, Ministry of Defense (HM/III), 1 May 1941 - 1 May 1942
- Chief of Main Supply Bureau, Ministry of Defense, 1 May 1942 - December 1942
- G.O.C. IV. Army Corps, December 1942 - September 1944
- Acting Commander-in-Chief, 3rd Army
- Fellgiebel, Walther-Peer (2000). Die Träger des Ritterkreuzes des Eisernen Kreuzes 1939–1945 – Die Inhaber der höchsten Auszeichnung des Zweiten Weltkrieges aller Wehrmachtsteile [The Bearers of the Knight's Cross of the Iron Cross 1939–1945 — The Owners of the Highest Award of the Second World War of all Wehrmacht Branches] (in German). Friedberg, Germany: Podzun-Pallas. ISBN 978-3-7909-0284-6.
- Kovács, Attila Ótott (2006). Die ungarischen Inhaber des Ritterkreuzes des Eisernen Kreuzes. Ranis: Scherzers Militaer-Verl. ISBN 978-3-938845-02-8.
Lieutenant-General Károly Beregfy
|Commander of the Hungarian Third Army
September 19, 1944 – May 8, 1945
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