South African pilots with higher numbers of kills were members of the British Royal Air Force, such as Pat Pattle and a fighter pilot who led No. 74 Squadron RAF during the height of what?
Battle of Britain
Adolph Malan
Adolph Gysbert Malan, (24 March 1910 – 17 September 1963), better known as Sailor Malan, was a South African fighter pilot and flying ace in the Royal Air Force (RAF) who led No. 74 Squadron RAF during the height of the Battle of Britain.
 Under his leadership No. 74 Squadron became one of the RAF's most accomplished squadrons.
 Malan scored 27 kills, seven shared destroyed, three probably destroyed and 16 damaged.
John Frost (SAAF officer)
John Everitt "Jack" Frost, (16 July 1918 – missing in action 16 June 1942) was a South African fighter ace during the Second World War.
 He was the highest-scoring member of a South African Air Force squadron during the war, credited with the destruction of 15 Axis aircraft.
 South African pilots with higher numbers of kills, such as Pat Pattle and Adolph "Sailor" Malan, were members of the British Royal Air Force.
No. 145 Wing RAF
No. 145 Wing RAF was a formation of the Royal Air Force during the Second World War.
 It comprised No. 341 Squadron RAF, No. 74 Squadron RAF, No. 329 Squadron RAF, No. 345 Squadron RAF and No. 575 Squadron RAF. No. 146 Wing RAF
No. 146 Wing RAF was a formation of the Royal Air Force during the Second World War.
 It comprised No. 193 Squadron RAF, No. 197 Squadron RAF, No. 257 Squadron RAF, No. 263 Squadron RAF and No. 266 Squadron RAF. No. 139 Wing RAF
No. 139 Wing RAF was a formation of the Royal Air Force during the Second World War.
 It comprised No. 320 Squadron RAF, No. 98 Squadron RAF, No. 271 Squadron RAF and No. 416 Squadron RAF. No. 3 (S.A.) Wing
No. 3 (S.A.) Wing was a South African Air Force commanded formation during World War II that served in North Africa, Sicily and Italy.
 It was formed on 28 August 1941 and initially consisted of Royal Air Force and South African Air Force squadrons under South African command, known as No. 261 Medium Bomber Wing but became a fully fledged South African formation on 23 September 1942 when No. 55 Squadron RAF and No. 223 Squadron RAF were transferred from 3 (S.A.) Wing to No. 232 Wing RAF and it became known as No. 3 (South Africa) Wing.
 This left 12, 21 and 24 Squadrons SAAF as its assigned units. No. 124 Wing RAF
No. 124 Wing RAF was a Hawker Typhoon formation of the Royal Air Force during the Second World War.
 It comprised No. 137 Squadron RAF, No. 181 Squadron RAF, No. 182 Squadron RAF and No. 247 Squadron RAF. No. 132 Wing RAF
No. 132 Wing RAF was a formation of the Royal Air Force during the Second World War.
 It comprised No. 66 Squadron RAF, No. 127 Squadron RAF, No. 322 Squadron RAF, No. 331 Squadron RAF and No. 332 Squadron RAF. Ten Rules for Air Fighting
Adolph Gysbert Malan DSO & Bar DFC (24 March 1910 – 17 September 1963), better known as Sailor Malan, was a South African World War II fighter pilot who led No. 74 Squadron RAF during the height of the Battle of Britain.
 Malan developed a set of simple rules for fighter pilots, which eventually could be found throughout RAF Fighter Command: Pat Pattle
Marmaduke Thomas St John Pattle, {'1': ", '2': ", '3': ", '4': "} (3 July 1914 – 20 April 1941), usually known as Pat Pattle, was a South African-born Second World War fighter pilot and flying ace (an aviator credited with the destruction of five or more enemy aircraft in aerial combat) of the Royal Air Force (RAF).