In 1983, he enlisted in the IDF and volunteered for the Paratroopers Brigade, joining the Nahal Airborne Battalion.

Bachar led the brigade during Operation Defensive Shield, capturing Tulkarm and its surroundings, as well as Qabatiya, without casualties.

In 2003, following the death of Dror Weinberg,[6] he was appointed commander of the Paratroopers Brigade,[7] leading it in the fight against Palestinian terrorism during the Second Intifada, including in Operation Tight Embrace in Nablus, where his soldiers killed around 11 wanted terrorists and wounded many more.

On 20 August 2006, he was promoted to the rank of Brigadier General and appointed Chief Infantry and Paratroopers Officer.

[9] Following the Second Lebanon War, and the resignation of Gal Hirsch, he was appointed temporary commander of Galilee Division but returned to his previous position after several months.

[11] In July 2012, he commanded the division's forces in thwarting the infiltration of terrorists from Sinai who had taken control of armored personnel carriers from the Egyptian Army with the intention of carrying out an attack near Kerem Shalom Crossing.

[15] In this role, he coordinated the debriefings of IDF forces' actions during Operation Protective Edge.

[19] In April 2020, Bachar was appointed to handle the COVID-19 crisis in the city of Beitar Illit, a role he held for a month, during which time the number of infected was reduced to zero.