After the war, on December 18, 1945, Jalandoni, then
Army Deputy Chief of Staff, was promoted by
Commonwealth President
Sergio Osmeña from vice brigadier-general to
brigadier-general, and was appointed as
Chief of Staff, replacing
Basilio Valdes; effective on December 21. mainly in line with the "Government Reorganization Plan" issued by President
Manuel Roxas in October. Later that month, Jalandoni issued
General Orders No. 228, renaming the designation
Army of the Philippines to
Armed Forces of the Philippines (AFP); effectively placing him as
its Chief of Staff. Jalandoni was replaced by
Mariano Castañeda on December 16, 1948. On April 28, 1949, Jalandoni accompanied former first Lady
Aurora Quezon, widow of former President
Manuel L. Quezon on her way to the town of
Baler, together with her daughter Maria Aurora (Baby) Quezon, son-in-law Felipe Buencamino III, and grandson to unveil a marker in memory of her late husband. In
Bongabon,
Nueva Ecija, their vehicle was ambushed by
Hukbalahap rebels, leaving Jalandoni as the only survivor after he was knocked unconscious when he was hit in the head by a pistol butt. In early 1950, Jalandoni was appointed
mayor of Iloilo City; serving until 1952. == References ==