The operational command of the Polish Armed Forces announced the sudden death of Brigadier General Adam Marczak, chief of staff of the allied command of Operation Althea, the EU-led military mission in Bosnia and Herzegovina. The Polish contingent involved, numbering up to 50 soldiers and staff, performs training and advisory tasks and is stationed in Sarajevo.
...
General Marczak until July 2021 was the head of the intelligence and electronic warfare department in the general command of the armed forces. He served in the 6th Airborne Brigade, and then at the headquarters of the Special Forces Directorate. He also held command positions in missions in Bosnia and Afghanistan. As of 2017, he commanded the 25th Air Cavalry Brigade. He graduated from the Higher Officer School of Mechanized Forces in Krakow.
Speculation may be that it could be related back somehow to the conflict in the Ukraine. We are dealing with a guy involved in Air Calvary and formerly a head of intel & electronic warfare...
Might not quite be significant - we had people die of completely unsuspicious heart attacks and such under the age of 50 in the Army when I was in, but it's worth knowing that it happened. Perhaps something will develop out of this.