A commander identified as "Darwin" of the 125th Separate Mechanized Brigade reportedly described combat operations during Operation Vivaldi, which led to the liberation of Novoselelivka, Shandriholove, and Derylove. He stated that Ukrainian forces maintained the element of surprise through measures including the destruction of enemy drones, electronic warfare, camouflage, and disinformation.

The commander, "Darwin," stated that at one point, enemy forces were approximately equal in number to Ukrainian troops. He emphasized that the Ukrainian defense and unit were well-organized and structured, with clear understanding of their roles and positions.