1948 Palestinian exodus from Lydda and Ramle July the IDF appointed Yigal Allon to head the operation, and Yitzhak Rabin, who became Israel's prime minister in 1974, as his operations officer; both had served in the Palmach, an elite fighting force of the pre-Israel Jewish community in Palestine. The operation was carried out between 9 July 1948, the end of the first truce in the Arab-Israeli war, and 18 July, the start of the second truce, a period known in Israeli historiography as the Ten Days. Morris writes that the IDF assembled its largest force ever: the Yiftach brigade; the Eighth Armored Brigade's 82nd and 89th Battalions;
Prime Minister of India Congress. Subsequently, Morarji Desai—a former deputy prime minister—became the first non-Congress prime minister of the country. The government of Prime Minister Desai was composed of groups with opposite ideologies, in which unity and coordination were difficult to maintain. Ultimately, after two and a half years as PM; on 28 July 1979, Morarji tendered his resignation to the president; and his government fell. Thereafter, Charan Singh—a deputy prime minister in Desai's cabinet—with outside, conditional support from Congress, proved a majority in Lok Sabha and took oath as prime minister. However, Congress pulled its support shortly after, and Singh had to resign;