of 2 cm. calibre and upwards. If our mathematics are correct, we believe that this figure should be 18,905 and we shall use this figure in the following calculations. If, therefore, we deduct the 2 cm. and 2.5 cm. guns, the estimate of anti-aircraft guns of 3.7 cm. and upwards is 11,655. Summary. Taking the three Service estimates of the total stock of guns in the German forces as at 3rd March, 1940, we estimate that to accumulate such stocks the following deliveries must have taken place:(a) Deliveries to the German Navy from 1933 to 3rd March, 1940......