On 15 June 1995, forces of the 2nd Corps of the BiH Army launched simultaneous offensives against the 1st Brčanska Brigade, the 1st Zvornik Infantry Brigade, and the 1st Vlasenica Brigade along the Tuzla-Zvornik and Kladanj-Vlasenica axes.ICTY official site: "Trial of Radislav Krstić Transcript", 18 October 2000 There were casualties suffered on both sides, but the Drina Corps made territorial gains in the Kalesija and Osmaci municipalities, and after four days of fighting, the 2nd Corps were driven back to their original positions. The Eastern Bosnia Corps then concentrated their forces on the Tuzla-Zvornik axis, however, and after establishing a bridgehead on the Spreča River, they broke through Serb lines and destroyed the villages of Markovica, much of Osmaca, and the entire village of Zelena. The 28th Division of the 2nd Corps then occupied the villages of Višnjica and Rječice, where they attacked the VRS Main Staff from the direction of Banja Lučica and Krivace. This territory was held until 26 June, when the Drina Corps fortified their defenses and managed to halt and then repel the BiH Army back to their initial positions.
