From November 1947 the roads to the four kibbutzim of Gush Etzion ("The Etzion Bloc"), south of Jerusalem were blockaded by militias from neighbouring villages. The Haganah used a strategy of armed convoys to get supplies to the outposts. The initial convoys to the bloc used open pickup trucks ("tenders"), since the British claimed that armored vehicles would irritate the Arabs. The convoys were accompanied by official Mandate police "monitors" (notrim) in uniform.
The Convoy of Ten was the first failed attempt using this method. Its four vehicles were ambushed on the main road north of King Solomon's pools on December 11, 1947. Ten of the convoy personnel were killed, four injured and only four escaped unhurt. On December 14 an additional person was killed in another attack on a convoy. The Haganah then decided it would use armored "sandwich" vehicles in the convoys.
See main article: article and Convoy of 35. As an alternative to the Jerusalem road the Palmach attempted to reach the settlements from the west. Thirty-five members of the platoon were killed when they were attacked by militiamen from Surif.
The Nabi Daniel Convoy was a large group ambushed on their way back to Jerusalem on 27 March 1948. 15 were killed and 40 were injured. The Scotsman newspaper's correspondent Eric Downton described the incident: