- 17 September 1941- the German troops shot a group of 240 people, of whom 187 Jews and 53 communists in Ledine (Trostruki Surduk)
- January - March 1945 - the Enquiry Commission for the Sajmiste camp exhumed the bodies from the mass grave at Trostruki Surduk, as well as from other mass graves (around 70 of them) nearby (Belanovićev Surduk) in which the bodies of about 3,600 prisoners from the Sajmiste reception camp were found, and at the Jewish cemetery in Zemun where around 6,500 bodies were exhumed, also camp prisoners from the Sajmiste reception camp
- 1964 – The Union of Associations of Veterans of the People's Liberation War of New Belgrade set up the first commemorative plaque in memory of those executed in Trostruki Surduk, but with the wrong data
On 17 September 1941 in Ledine, at the location known as Trostruki Surduk, the German troops shot 240 hostages from the Banjica camp, of whom 187 male Jews and 53 communists.
This large group of Jews had been transferred three days before from the Topovske supe camp to Banjica as the camp had been overcrowded. Namely, as testified by a report by the Commander for Serbia of 17 September 1941, it was exactly in those days that the internment of male Jews from Belgrade started. Thanks to the Banjica prisoner registers, we know the first and last names of all 187 men executed in Ledine "taken to the Zemun camp by the SS," as it says in the books. Therefore, the killing site in Ledine is the only one in which the names of the victims are fully known.
In the first half of 1945, a special branch of the Yugoslav State Commission for the Investigation of the Crimes of the Occupiers and their Supporters, and the Enquiry Commission for the Sajmiste camp carried out the exhumation of bodies from the mass grave in Trostruki Surduk. The location was found thanks to the testimonies of the locals who described the shooting in detail.
It was not until 19 years later that the location would be marked by the SUBNOR’s (the Union of Associations of Veterans of the People's Liberation War) New Belgrade branch, which would set up a commemorative plaque with an erroneous text that reads as follows:
"In this spot, in February 1942, the occupying forces executed 350 Jewish patriots. The majority of those shot are women and children, who fell victim to the fascist crime."
- Union of Associations of Veterans of the People's Liberation War of New Belgrade, 20 October 1964