308 "City of Kraków" Polish Fighter Squadron Wing Commander Antoni (Toni) Głowacki (10 February 1910 – 27 April 1980) DFC, DFM, was a Polish Second World War fighter pilot flying with Polish Squadrons attached to the Royal Air Force, who is notable for shooting down five German aircraft on 24 August 1940 during the Battle of Britain, becoming one of only four pilots who gained "ace-in-a-day" status during that battle,[2] the others being New Zealander Brian Carbury, Englishman Ronald Hamlyn and Scot Archie McKellar.

On arrival in England on 28 January 1940, they were transferred by the RAF to fighter squadrons which were rapidly being deployed in anticipation of an attack on Britain in 1940.

501 RAF "County of Gloucester" Fighter Squadron on 5 August 1940 as a sergeant pilot flying Hawker Hurricanes.

[6] Głowacki was immediately involved in uneventful daily sorties for 10 days (building up his total flying time on Hurricanes to 50 hours), until 15 July when the squadron intercepted Junkers Ju 87 dive-bombers.

[1] Unlike other RAF pilots, Głowacki preferred to fly one aircraft exclusively, SD-A (V7234), which he considered his "lucky Hurricane.

"[1] During three sorties on 24 August 1940, flying SD-A, Głowacki shot down three Bf 109s and two Junkers Ju 88 bombers over Ramsgate, to become the first "One-day Ace" of the Battle of Britain.

[11] After returning from hospital, he was again rotated into regular duty, but had a difficult time regaining his scoring touch.

308 "City of Kraków" Polish Fighter Squadron (Krakowski), serving as flight commander until 22 February 1944.

[13] The squadron was equipped with long-ranging North American Mustang Mk III fighters.

As a Flight Lieutenant he was an instructor at OTU at Ohakea Air Base, converting new pilots from piston-engined trainers to Vampire jets.

[2] In recognition of his service in the Battle of Britain and later campaigns, Głowacki received several awards:[2] Zieliński, Józef (1994).