Stanislav Osaulenko was the deputy commander of the infantry fighting vehicle (IFV) – gunner-operator of the 8th Company, 3rd Mechanized Battalion, 93rd Separate Guards Mechanized Brigade of the Land Forces of the Armed Forces of Ukraine, holding the rank of senior soldier.

He was born on July 25, 1991 in Synelnykove, Dnipropetrovsk region. In 2006, Stanislav Osaulenko graduated from the 9th grade of Secondary School No. 2 in Synelnykove, and in 2009, he graduated from Synelnykove Professional Lyceum with a degree as an electric and gas welder, specializing in electric welding on automatic and semi-automatic machines.

Since the summer of 2009, with a break for military service, he worked as a welder in Shift No. 2 at the mechanized car repair point of the Nyzhniodniprovsk Car Depot, part of the Dnipro Directorate of the Prydniprovsk Railway.

From autumn 2009 to autumn 2010, Stanislav Osaulenko served in the Armed Forces of Ukraine.

In March 2014, the Synelnykove City Military Commissariat of the Dnipropetrovsk Region mobilized him into the ranks of the Armed Forces of Ukraine. There, Stanislav Osaulenko served as the deputy commander of the infantry fighting vehicle (IFV) – gunner-operator of the 8th Company, 3rd Mechanized Battalion, 93rd Separate Guards Mechanized Brigade of the Land Forces of the Armed Forces of Ukraine (military unit A1302, field mail B2830; Cherkaske urban-type settlement, Novomoskovsk District, Dnipropetrovsk Region).

Since April 2014, he has been participating in the anti-terrorist operation in eastern Ukraine.

On August 27, 2014, a group of military personnel in an IFV, with Senior Soldier Osaulenko serving as the deputy commander and gunner-operator, left the checkpoint to respond to a call for help. In the area between the towns of Horlivka and Yenakiieve, Donetsk Region, Ukrainian soldiers were ambushed by separatists and attacked from three sides. During the battle, the gun jammed and the IFV engine stalled. Senior Soldier Osaulenko had to exit the combat vehicle and engage in combat as an infantryman. During the subsequent battle, he sustained a gunshot wound in the armpit area (his bulletproof vest protected him from two bullets, but the third hit between the plates). His comrades attempted to save Senior Soldier Osaulenko, providing first aid, bandaging him, and stopping the blood flow. However, their efforts were in vain, and he died in the arms of his brothers-in-arms.

On September 2, 2014, he was laid to rest in the Eastern Cemetery of Synelnykove, Dnipropetrovsk Region.

Stanislav Osaulenko was posthumously awarded the Order of Courage, Third Grade, on May 15, 2015.

He was survived by his parents, wife, and son.