Major General Thomas Wynford Rees, CB, CIE, DSO & Bar, MC, DL (12 January 1898 – 15 October 1959) was a Welsh officer in the British Indian Army during the First World War, the interwar years and the Second World War The son of the Reverend T. M. Rees, he passed out from the Officer Cadet College, Quetta and was commissioned into the British Indian Army in November 1915 in the 73rd Carnatic Infantry.

The citation for his DSO, published in the London Gazette on 29 July 1919, reads: For conspicuous gallantry throughout the day on September 19th, 1918, during the attack on the Turkish position about Tabsor, and especially after passing through the last objective into open country.

Collecting various details of four different units up to a total of about 80 men, he organised them into parties, charged in face of strong opposition, and took two trenches, capturing about 50 prisoners and two field guns.

He served a term as private secretary to the Governor of Burma, Sir Charles Alexander Innes for which he was appointed a Companion of the Order of the Indian Empire (CIE) in the 1931 New Years honours list.

[4] In December 1937 was made brevet lieutenant colonel for "distinguished services rendered in the field in connection with the operations in Waziristan, during the period 25th November, 1936, to i6th January, 1937".

The division, having been employed piecemeal during the battle, was ordered to consolidate near Mersa Matruh on the Egyptian border and hold off the Axis advance for 72 hours.

Although the division was not sent to the front line in Burma until November 1944, from this date until the end of the war it was in continuous action, gaining a formidable reputation for itself and Rees, who was seen as one of the army's most offensively-minded generals.

[23]: 106–107 Promoted to the permanent rank of major-general in 1947,[24] Rees took the job as head of the Military Committee of the Indian Emergency Cabinet until he retired from the army in 1948.

John Masters noted in one of his autobiographies (The Road Past Mandalay) that Pete Rees was an abstinent (he "spoke softly, never swore, never drank, did not smoke."