Reseta arrived in the so-called Republik of Srpska Krajina in October 1993, following the order of the commander of the Yugoslav Army Main Staff, Momcilo Perisic. He stayed there until August 1995 and conducted the duty of the head of the information and analysis department of the Main Staff in the Republic of Srpska Krajina, after which he was the head of the military intelligence service.
"Martic enjoyed full support from the Yugoslav Army, while Milan Babic had no authority in the army. The policy supporting Martic was backed by Milosevic," Reseta said.
According to him, he personally received an order from the head of the Yugoslav Army military and intelligence service, General Aleksandar Dimitrijevic, to provide Martic with all possible support, because this was what Milosevic wanted.
To illustrate Milosevic's impact on Martic, the witness said that the Z-4 peace plan failed because Martic had firmly dismissed it, following Milosevic's order.
"Colonel Mihajlo Knezevic told Martic that the boss from Belgrade was against Plan Z-4 and that it must be rejected a priori, " Reseta said.
He stressed that the army of the Republic of Srpska Krajina was in fact an offspring of the Yugoslav Army,
"It was in fact one body at two locations," Reseta said, adding that the Yugoslav Army provided the Army of the Republic of Srpska Krajina with staff, armaments and pay checks.
Reseta said that the supreme body that commanded the armed forces was the supreme defence council of the so-called Republic of Srpska Krajina, led by Martic,
Commenting on the evidence case 95, a document of the state security service made on 2 May 1995 after the liberation of western Slavonia, Reseta said the document was about shelling Zagreb by cluster bombs fired from Orkan rockets, in an operation that he did not support.
This was a retaliation for western Slavonia, Reseta added, stressing that the shelling of other Croatian cities were also planned.
Zagreb was shelled on 2 and 3 May 1995. Six civilians were killed and about 200 were injured in the attack.
Apart from shelling Zagreb, the ICTY also charges Martic with crimes against Croatian civilians and non-Serbs in Bosnia as part of crimes against humanity and violations of the laws and customs of war.
Prosecutor Alex Whiting is trying to prove that plans to expel Croats and other non-Serbs were one of the basic elements in creating the so-called Republic of Srpska Krajina and that Martic was one of the key figures in a joint criminal enterprise, led by Milosevic.