The Youngest soldier in World War 1

Momčilo Gavric (1 May 1906 – 28 April 1993) was the youngest known soldier of World War I, joining the army at the age of 7 and becoming a corporal at the age of 8.
He was born in Trbusnica, on the slopes of Mount Guevo, near Loznica, the eighth of 11 children of Alimpie and Elena Havrich. In early August 1914, Austro-Hungarian soldiers of the 42nd Infantry Division of the Croatian Home Guard wounded and hanged his father, mother, grandmother, three sisters and four brothers. His house was also set on fire. Momchilo survived because he was not at home when the incident occurred. His father had previously sent him to his older brother. Familyless and homeless, Momčilo visited the 6th Artillery Division of the Serbian Army near Gučevo. After hearing what happened, Dimitrii Tukovic's brother, Major Stevan Tukovic, took Gavric to his unit and assigned a soldier from the unit, Milos Misovic, to be Gavric's guardian. That night, he retaliated by showing his unit the location of Austro-Hungarian soldiers and, as his son Branislav Gavric said in an interview, took part in the bombing.
Eight years after the Battle of Cher, his commanding officer gave him the rank of corporal and gave him a uniform. When his unit was sent to Thessaloniki, Major Tukovic sent him to Sorowitz, where he hastily passed the equivalent of four grades of primary education.
At Kaimakalan, Field Marshal Misic was surprised to see a 10-year-old boy in uniform in the trenches. Major Tukovic explained the situation to him. Gavrych had been with them since the Battle of Tser and learned the discipline while in the unit and was wounded. Misich appointed Gavrich as lance sergeant and orders were read to the entire division.