After immigrating to Palestine, Atzmoni joined the
Jewish Settlement Police and dealt with
Naharayim. Following an
Arab Legion attack, he retreated with the guards and reached the nearby base of the 12th Battalion of the
Golani Brigade. He joined the ranks of the brigade and after a sergeant course was stationed as a company sergeant and served in this position during the
1948 Arab–Israeli War. Later, He joined the artillery corps, where he served in reserves for many years. In 1969, following severe manpower shortage in the
Israel Defense Forces, he responded to a request by its Chief of General Staff and returned for a year of voluntary service in the artillery corps.
Decorations In September 1948, Atzmoni cleared a fire-focused ammunition box during battle and received a commendation from the brigade commander. In January 1949, Atzmoni's unit was attacked near Rafah. A military car was blocking the artillery's line of sight, preventing an effective response. Atzmoni ran, under heavy fire, and was able to start the car and move it, thus clearing the way for the artillery to act and destroy 18 enemy vehicles. For this he was awarded the
Hero of Israel commendation, which is the highest commendation ever awarded by the IDF, given to only twelve soldiers: ==Later life and death==