10 Apr 1912 - 10 Apr 1914:              Cadet, Victoria College OTC

19 Nov 1914:              Officer, 11th (Service) Battalion, Devon Regiment.

xx xxx xxxx:              Instructor Officer, Machine Gun Corps.

8 May 1916:               U/T Pilot, No 1 School of Military Aeronautics

 3 Jun 1916:                U/T Pilot, No 7 Reserve Sqn RFC

 7 Jun 1916:                U/T Pilot, No 7 Reserve Sqn RFC

20 Jul 1916:                Appointed Flying Officer, RFC

20 Jul 1916:                Transferred to the General List.

29 Jul 1916:                Pilot, No 42 Sqn.

 8 Aug 1916:               Embarked for France

24-26 Oct 1916:         To 7th HAG

11 Dec 1916:              Pilot, No 41 Sqn.

10 Jan 1917:               Flight Commander, No 41 Sqn

 2 May 1917:              Returned to Home Establishment

14 May 1917:             Instructor, No 59 Training Sqn, RFC

17 Jul 1917:                Flight Commander, No 84 Sqn, RFC.

22 Sep 1917:              Re-embarked for France (with No 84 Sqn)

 8-16 Nov 1917:         Temporary duty at Aerial Ranges

11-16 Feb 1918:         Attended Course of Instruction, ERS

 3 Apr 1918:                Admitted to No 24 General Hospital

 6 Apr 1918:                Returned to UK on HT 'Ville de Liege'

 8 May 1918:               Movements Officer (Temporary), South West Area

11 May 1918:              Instructor, No 54 Training Sqn

15 Jul 1918:                 Instructor, No 50 Training Depot Station 

31 Jul 1918:                 Instructor, No 30 Training Depot Station 

1 Aug 1919:                Resigned his commission in the Devon Regiment on appointment to a Permanent Commission in the RAF.

 1 Aug 1919:               Appointed to a Permanent Commission in the rank of Captain.

14 Aug 1919:              No 2 Group Concentration Camp

15 Aug 1919:              Repatriation Camp, Uxbridge

2 - 10 Sep 1919:         Temporary duty, Air Ministry (Dept of CAS)

18 Oct 1919:               Duty with Quartermaster Branch, Southern Area

 9 Mar 1920:               Staff, HQ Southern Area for No 8 Wing Disposal Party

 1 Apr 1920:                Staff, HQ Inland Area for No 8 Wing Disposal Party

15 May 1920:              Technical Staff (Armament duties), HQ Inland Area

20 Jan - 8 Feb 1921:   Placed on Half-Pay List, Scale 'B' 

 8 Feb 1921:                Flight Commander, No 208 Sqn.

10 Sep 1923:               Returned to UK on leave (4 months, but cut short)

 5 Nov 1923:               AI 2 (c), Directorate of Operations and Intelligence.

25 Mar 1926:              Refresher Flying Course, No 24 Sqn

25 May 1926:              Attended Senior Officers (Army) School, Sheerness.

26 Jul 1926:                 Leave?

16 Sep 1926:               Attended Officers Engineering Course, Home Aircraft Depot.

10 Aug 1928:               Successfully completed the Long Engineering Course and awarded the symbol 'E'

20 Aug 1928:               Engineering Officer/2 i/c, No 4 Apprentices Wing, No 1 School of Technical Training.

 8 Oct 1929:                Engineering Officer, Aircraft Depot, India.

12 Feb 1932:               Supernumerary, No 60 Sqn.

20 Feb 1932:               Officer Commanding, No 60 Sqn.

10 Jan 1933:                Supernumerary (pending posting), No 60 Sqn.

 3 Feb 1933:                Senior Equipment Staff Officer, HQ RAF India.

12 Nov 1934:              Supernumerary, RAF Depot

3 Feb 1935:                 Senior Engineering Officer, HQ Air Defence of Great Britain.

14 Jul 1936:                 Engineering Staff Officer, HQ Bomber Command.

24 Apr 1940:               Transferred to the Technical Branch

18 Nov 1943:              Supernumerary, HQ No 43 Group

20 Nov 1940:              AOC, No 43 Group

7 Jan 1944:                  Temporary duty, HQ No 24 (Training) Group

17 Jan 1944:                AOC No 24 (Training) Group.

 1 Mar 1947:                Supernumerary, Air Ministry Unit pending appointment

 1 Mar 1947:                Temporary duty with AMTS

15 Mar1947:                Director-General of Servicing and Maintenance

 5 Jan 1948:                  Director-General of Engineering.

 3 Nov 1949:                Supernumerary (pending retirement), Air Ministry Unit.

He was awarded RAeC Certificate 3673 on 20 July 1916.  During WW1, his score was three destroyed, four out of control and one shared out of control.  He retired at his own request and was killed, along with his wife in a head-on collision in their car at Chalfont St Peter.  The driver of the other car was a member of the USAF.

Recommendation for an unspecified award

This recommendation was made for an award (probably a CBE) which was not granted; others in document were honoured 1 January 1943.  Award was sponsored by Ministry of Aircraft Production.

"LEASK, Kenneth Malise St. Clair Graham, A/C, MC - No.43 Group

This officer assumed command of No 43 Group in November 1940, and four years employment on engineer staff duties at Bomber Command.  He is a very able commander, keen, clear thinking, and a good leader.  Under his administration the repair and salvage functions of the group have been carried out with great efficiency."

(Source - Air 2/8909 )

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