Aubertin Walter Sothern Mallaby

Aubertin Walter Sothern Mallaby
Mallaby on his wedding day, 9 April 1935
Born	12 December 1899
Died	30 October 1945(1945-10-30) (aged 45) Surabaya, Indonesia
Buried	Jakarta, Indonesia
Allegiance	United Kingdom
Service/branch	British Indian Army
Years of service	1918–1945
Rank	Major General (posthumous)
Unit	27th Punjabis 15th Punjab Regiment
Commands held	49th Indian Infantry Brigade

Brigadier Aubertin Walter Sothern Mallaby CIE OBE (12 December 1899 – 30 October 1945) was a British Indian Army officer killed in a shootout during the Battle of Surabaya in what was then the Netherlands East Indies during the Indonesian National Revolution. At the time of his death, Mallaby was the Commanding Officer (CO) of the 49th Indian Infantry Brigade.

Mallaby's death became a major event of hostilities in Surabaya surrounding Indonesian Independence, triggering a retaliatory military action by British forces in the city.

Mallaby was born to William Calthorpe and Katharine Mary Francis Mallaby on 12 December 1899.

He attended the Wellington Cadet College in India and was commissioned as a Second Lieutenant on the Unattached List, Indian Army on 1 October 1918, being admitted to the Indian Army on 8 October 1918 and was appointed to the 27th Punjabis.

He transferred to the 67th Punjabis (later 1st battalion, 2nd Punjab regiment) on 20 July 1919 and promoted lieutenant on 1 October 1919. He served in Waziristan between 1921 and 1924. He received promotion to captain on 1 October 1924.

He attended Camberley Staff College between 1930–1931 and was appointed a General Staff Officer, 3rd grade on 5 February 1933, being promoted to General Staff Officer, 2nd grade (for RAF co-operation duties), on 1 April 1933. This appointment lasted until 4 February 1937. He was promoted brevet major on 1 July 1935 and substantive major on 1 October 1936.