He attended the Israeli Air Force flight academy, graduating as the outstanding cadet of the fighter-navigation track.

After graduation Rozen was assigned to 119 "Bat" Squadron which at that time flew the McDonnell Douglas F-4 Phantom II from Tel Nof Airbase.

[6] Rozen flew hundreds of operational missions throughout the war, including attacks on Syrian surface to air missiles (SAM) sites, protection of IDF convoys, and deep penetration strikes against enemy strategic infrastructure.

Rozen held key positions in Israel's leading defense industries including BVR and Elbit Systems' El-Op division.

[7] Shimshon Rozen led the "Don't kill us"[8] protest activities against the plan to build a power station[9] fueled by natural gas close to residential areas of Kiryat Malakhi.