Complex sentence: He succeeded Luis Batlle as President of Uruguay from 1951 to 1955, as part of the Colorado Party, and was himself succeeded by Batlle on the latter's return to the Presidential office.
Split into simpler sentences: He succeeded Luis Batlle as President of Uruguay from 1951 to 1955, as part of the Colorado Party. President Andrés Martínez Trueba was himself succeeded by Batlle on the latter's return to the Presidential office.