Forty-three years have passed since he was executed, but Eli Cohen - "Our Man in Damascus" - is still considered by the defense establishment as the greatest spy in Israeli history. On Monday, The Jerusalem Post interviewed the man who for three years received and decoded the transmissions Cohen sent back to Israel from deep inside Syria. Cohen operated behind enemy lines - establishing close ties with the top Syrian political and military leadership - from 1962 until he was hanged almost exactly 43 years ago on May 18, 1965. "A," today a 62-year-old veteran of the Israeli intelligence community, was a 20-year-old radio operator with Military Intelligence (MI) when in 1962 he began receiving the daily radio transmissions from Damascus. "I didn't know who was sending the messages," A told the Post on Monday during a tour of an exhibition on MI's history that will open to the pubic on Independence Day. "It was, however, clear that the short messages were of extreme importance, which later helped determine Israel's destiny ahead of the Six Day War." Cohen's transmissions were instrumental in helping the IDF prepare for the 1967 war with Syria. He provided information about the Syrian Air Force and military positions on the Golan. Mossad chief Meir Amit has been quoted as saying: "Eli succeeded far beyond the capabilities of most other men." According to "A," Cohen used to send daily messages always at the same time of the day - 8:30 a.m. Cohen, who was known in MI by the number 566, wrote in encrypted French and sent his messages via a tiny radio transmitter. As part of Israel's 60th celebrations, MI chief Maj.-Gen. Amos Yadlin decided several months ago to open up the branch's Glilot training base outside of Tel Aviv to Israeli citizens and to put on display there a widespread exhibition spanning 60 years and detailing Israeli Military Intelligence history as well as its many successes. The exhibition includes a replica of a Hizbullah nature reserve packed with mock Katyusha rockets and anti-tank missiles, guerrilla weapons and surveillance equipment discovered during the Second Lebanon War as well as a model of a 17-meter weapons-smuggling tunnel, dozens of which are believed to be used by Hamas along the Gaza Strip's border with Egypt. During the tour - which will open Thursday morning - MI will also show a movie that includes never-heard-before radio transmissions from the IDF's hostage rescue operation in Entebbe in 1976. On display in one of the tents built especially for the exhibition is the last original message that was transmitted to MI headquarters in Israel by the Syrian military following Cohen's capture: "To [prime minister] Levi Eshkol and the handler of his spies: Kamel [Eli Cohen's fake identity in Syria] and his friends have been staying by us for some three years. Signed by: Syrian Arab Intelligence." "A," who throughout his intelligence career transmitted, received and decoded tens of thousands of messages from Israeli spies, said Monday that he remembered receiving the final transmission. "There was great excitement and sadness," he said. "We ran to our commander with the message and he passed it on to Eli Cohen's handlers and we understood that it was over."