Yitzhak Rabin operations during Israel's War of Independence. He joined the newly formed Israel Defense Forces in late 1948 and continued to rise as a promising officer. He helped shape the training doctrine of the IDF in the early 1950s, and led the IDF's Operations Directorate from 1959 to 1963. He was appointed Chief of the General Staff in 1964 and oversaw Israel's victory in the 1967 Six-Day War. Rabin served as Israel's ambassador to the United States from 1968 to 1973, during a period of deepening U.S.–Israel ties. He was appointed Prime Minister of Israel in 1974, after the resignation of
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;