The following is a repost from Oct. 10, 2015
By 1969, the Israeli Air Force was using drones to photograph and monitor
Egyptian, Syrian, and later, Jordanian troops.
Israel Military Intelligence: Intelligence During Yom Kippur War (1973)Jewish Virtual Library
by Doron Geller
The Yom Kippur War of October 1973 was a terrible surprise, which put Israel's security - and even survival - in jeopardy. By the end of the war, Israel had turned the tables and both Cairo and Damascus were under threat. But that did not diminish the sense of shock which shook the nation in the aftermath of the war. How could such a disaster have happened? Israel was supposed to be nearly "invincible", in the minds of many of her military and political leaders. That sense of confidence deflated quickly in the aftermath of the war. Much of the blame fell on the shoulders of the Intelligence community, which was blamed for not accurately assessing clear information that Egypt and Syria planned to go to war on October 6, 1973. Israel's victory in 1967 extended her borders to all of the West Bank, the Gaza Strip, the Golan Heights, and the Sinai Peninsula. Israel set up electronic eavesdropping and early warning stations in the Jordan Valley along the border with Jordan, on Mount Hermon in the Golan Heights, looking into Syria, and along the East Bank of the Suez Canal, which enabled Israel to observe Egyptian forces on the other side. By 1969, the Israeli Air Force was using drones to photograph and monitor Egyptian, Syrian, and later, Jordanian troops. By July of 1969, the Israeli Air Force was called on to engage in deep penetration bombing in the Nile Valley inside of Egypt in response to the continuance of Egypt's declared "War of Attrition." more here