Under his guidance, the political framework was laid for democratic elections in 1962 and independence of the country on 1 July that year.
From 1959 to 1962, Logiest served as special military resident, and High Representative (1962) of Rwanda.
During the years when Rwanda was developing institutions to gain independence from colonial rule, Logiest helped guide the creation of a political framework for administration.
This included preparation for elections, with the expected result that the Hutu majority would take power.
[2] Later Logiest also was head of the Belgian military mission to the Congo,[3] where he actively countered popular supporters of deceased Patrice Lumumba.