Aircraft Strength and Losses
British Air Force Strength During the Battle of Britain
Number of immediately available fighters, according to "The Battle of Britain" by Peter G. Cooksley (Ian Allan Ltd., 1990)
                        Hurricanes         Spitfires
                        ----------------------------
       21 August               615               326
       30 August               580               287
        8 September            530               275
       15 September            472               256
        2 October              482               281
       18 October              512               285
Losses in the Battle of Britain
July 1940
       ----------------------
       R.A.F. Fighter Command
       ----------------------
       Hurricane         33 destroyed, 17 damaged
               23 killed, 0 missing, 11 wounded
       Spitfire          34 destroyed, 24 damaged
               25 killed, 0 missing, 9 wounded
       Blenheim          4 destroyed, 1 damaged
               9 killed, 0 missing, 1 wounded
       Defiant            6 destroyed, 1 damaged
               10 killed, 0 missing, 2 wounded
       TOTAL:            77 destroyed, 43 damaged
               67 killed, 0 missing, 23 wounded
       ----------------------
       Luftwaffe
       ----------------------
       Dornier Do 17         39 destroyed, 13 damaged
               30 killed, 74 missing, 19 wounded
       Junkers Ju 87         13 destroyed, 11 damaged
               10 killed, 12 missing, 3 wounded
       Junkers Ju 88         39 destroyed, 11 damaged
               52 killed, 67 missing, 11 wounded
       Heinkel He 111         32 destroyed, 3 damaged
               52 killed, 85 missing, 6 wounded
       Messerschmitt Bf 109   48 destroyed, 14 damaged
               17 killed, 14 missing, 13 wounded
       Messerschmitt Bf 110   18 destroyed, 4 damaged
               13 killed, 17 missing, 2 wounded
       Other            27 destroyed, 1 damaged
               19 killed, 33 missing, 15 wounded
       TOTAL:            216 destroyed, 57 damaged
               193 killed, 302 missing, 69 wounded
       ----------------------
August 1940
       ----------------------
       R.A.F. Fighter Command
       ----------------------
       Hurricane         211 destroyed, 44 damaged
               85 killed, 1 missing, 68 wounded
       Spitfire          113 destroyed, 40 damaged
               41 killed, 3 missing, 38 wounded
       Blenheim          13 destroyed, 10 damaged
               6 killed, 3 missing, 0 wounded
       Defiant            7 destroyed, 3 damaged
               7 killed, ? missing, 4 wounded
       Beaufighter         0 destroyed, 1 damaged
               0 killed, 0 missing, 0 wounded
       TOTAL:            344 destroyed, 98 damaged
               139 killed, 7 missing, 110 wounded
       ----------------------
       Luftwaffe
       ----------------------
       Dornier Do 17         71 destroyed, 30 damaged
               70 killed, 129 missing, 57 wounded
       Junkers Ju 87         57 destroyed, 16 damaged
               35 killed, 58 missing, 19 wounded
       Junkers Ju 88         89 destroyed, 32 damaged
               94 killed, 182 missing, 19 wounded
       Heinkel He 111         89 destroyed,  15 damaged
               113 killed, 204 missing, 35 wounded
       Messerschmitt Bf 109   217 destroyed, 45 damaged
               54 killed, 91 missing, 39 wounded
       Messerschmitt Bf 110   119 destroyed, 40 damaged
               80 killed, 113 missing, 22 wounded
       Other            27 destroyed, 4 damaged
               17 killed, 27 missing, 10 wounded
       TOTAL:            669 destroyed, 182 damaged
               463 killed, 804 missing, 201  wounded
       ----------------------
September/October 1940
       ----------------------
       R.A.F. Fighter Command
       ----------------------
       Hurricane         294 destroyed, 77 damaged
               107 killed, 2 missing, 10 wounded
       Spitfire          195 destroyed, 76 damaged
               67 killed, 1 missing, ? wounded
       Blenheim          12 destroyed, 4 damaged
               26 killed, 3 missing, 55 wounded
       TOTAL:            501 destroyed, 157 damaged
               200 killed, 6 missing, 162 wounded
       ----------------------
       Luftwaffe
       ----------------------
       Dornier Do 17         82 destroyed, 36 damaged
               147 killed, 94 missing, 50 wounded
       Junkers Ju 87         1 destroyed,  3 damaged
               1 killed, ? missing, ? wounded
       Junkers Ju 88         175 destroyed,  85 damaged
               251 killed, 227 missing, 74 wounded
       Heinkel He 111         131 destroyed,  78 damaged
               203 killed, 184 missing, 67 wounded
       Messerschmitt Bf 109   326 destroyed, 96 damaged
               77 killed, 159 missing, 36 wounded
       Messerschmitt Bf 110   124 destroyed, 26 damaged
               91 killed, 109 missing, 17 wounded
       Other            43 destroyed, 7 damaged
               23 killed, 35 missing, 16 wounded
       TOTAL:            882 destroyed, 331 damaged
               793 killed, 808 missing, 260  wounded
       ----------------------
Spitfire vs. Hurricane during the Battle of Britain
>From "Spitfire Special" by Ted Hooton:
          Spitfire  Hurricane   Time
       ------------------------------------------------------------------
       Average Strength  295      461
       11th Group    137      243
       Average Strength   38%       62%        July 1 -- September 30
       German shot down   43%       57%        July 1 -- September 30
       Bf 109 shot down   49%  (of all lost)   July -- August
       Bf 109 shot down   54%  (of all lost)   September
       Combat losses     39%       61%
       Accident rate      7%        7%
       ------------------------------------------------------------------
       Spitfire vs. Bf 109  : 219 to 180 lost.
       Hurricane vs. Bf 109 : 272 to 153 lost.
       ------------------------------------------------------------------
--------------------------------------------------------------------------------
British Air Force losses during WWII
       --------------------------------------------------------------------
         B. C.   A.C.C.   F.C.   T.A.F.   C.C.
       --------------------------------------------------------------------
       1939    40        3         | 288
       1940   509          1186         |
       1941   985      651       233
       1942    1543      688       302
       1943    2474      569    177    279
       1944    2904      397   1305    305
       1945   708       64    633    132
       --------------------------------------------------------------------
       Total   9163     70   3558   2115   1579
       --------------------------------------------------------------------
       Abbreviations: B.C. Bomber Command; A.C.C. Army Co-operation Command;
       F.C. Fighter Command; T.A.F. 2nd Tactical Air Force; C.C. Coastal
       Command. Numbers include aircraft that returned to base but were
       not repairable. Source: Jane's 45-46.
--------------------------------------------------------------------------------
Finnish Air Force Strength, november 1939
       Fokker C.X      29
       Fokker C.V       7
       Fieseler Fi.156 Storch    2
       Blackburn Ripon       8
       Junkers K.43       7
       VL Saaski       3
       VL Kotka        1
       Fokker D.XXI      36
       De Havilland Moth    3
       Bristol Bulldog      10
       Bristol Blenheim    16
--------------------------------------------------------------------------------
Air Force Strengths on 10 May 1940
Belgium
       Fairey Fox        98
       Renard R 31        21
       Gloster Gladiator     15
       Hawker Hurricane      11
       Fiat C.R.42        23
       Fairey Battle        14
The Netherlands
       Fokker C.X      11
       Fokker T.V       9
       Fokker D.XXI      28
       Fokker G.I      23
       Koolhoven F.K.51    16
       Douglas DB-8A      11