After the liberation of the southern Netherlands in 1945, Gerbrandy formed a new cabinet, but he resigned after the total liberation of the country. He opposed the government's Indonesian policy and from 1946 to 1950 chaired the National Committee for the Maintenance of the Kingdom's Unity, which opposed
Indonesian independence and advocated for the
Republic of South Maluku. In 1947, Gerbrandy took part in
a coup plot to prevent the implementation of the
Linggadjati Agreement and Indonesian independence. The plot failed without support from
Queen Wilhelmina. In 1950, Gerbrandy published
Indonesia, which offered an explanation of the history of the relationship between the Netherlands and the
Dutch East Indies (now
Indonesia) from the 1600s to 1948, which included "The Indies under Dutch rule", "The Rule of Law", "The Japanese Occupation", and "Chaos", with each section outlining Gerbrandy's observations. In 1948, Gerbrandy returned as a member of the
Dutch Parliament, but his hot temper alienated members of his party. In 1956, he was made member of a commission that investigated the affair surrounding
Greet Hofmans. Three years later, Gerbrandy resigned as a Member of Parliament. ==Personal life==