Appendix 10: The Battle of Britain: The Preliminary Phase Summary of Operations, 10th July to 12th August 1940
| Date | Main Events | Day sorties by Fighter Command | British fighter losses (24 hours) | German losses (24 hours) |
| 10th July | Rather heavy attacks on shipping. | 609 | 6 | 13 |
| 11th July | Rather heavy attacks on ports and shipping. | 432 | 4 | 20 |
| 12th July | Attacks on ports and shipping. | 670 | 6 | 7 |
| 13th July | Attacks on shipping. | 449 | 1 | 7 |
| 14th July | Attacks on shipping. | 593 | 4 | 2 |
| 15th July | Numerous attacks on shipping. | 470 | 1 | 3 |
| 16th July | Bad weather; little activity. | 313 | 2 | 3 |
| 17th July | Indifferent weather; some attacks on shipping and other targets. | 253 | 1 | 2 |
| 18th July | Attacks on ports and shipping. | 549 | 3 | 4 |
| 19th July | Attacks on Dover, leading to fierce combats in which Defiants of No. 141 Squadron suffered heavily. | 701 | 8 | 2 |
| 20th July | Attacks on shipping at and off Dover and in Lyme Bay. | 611 | 3 | 9 |
| 21st July | Attacks on shipping. | 57’ | 6 | 9 |
| 22nd July | A few attacks on ports and shipping. | 611 | – | 1 |
| 23rd July | A few attacks on shipping and other targets. | 470 | – | 3 |
| 24th July | Attacks on shipping; lively combats. | 561 | 3 | 8 |
| 25th July | Heavy and repeated attacks on shipping off Dover. British fighters frequently outnumbered. | 641 | 7 | 18 |
| 26th July | Few attacks, but some lively combats. | 581 | 2 | 4 |
| 27th July | Repeated attacks on shipping at and off Dover. | 496 | 1 | 4 |
| 28th July | Few attacks, but some lively combats. | 794 | 5 | 18 |
| 29th July | Rather heavy attacks on shipping at Dover and in Channel. | 758 | 3 | 8 |
| 30th July | Attacks on shipping. | 688 | – | 5 |
| 31st July | Attacks on shipping and on balloons at Dover. | 395 | 3 | 5 |
| 1st August | Attacks on shipping. | 659 | 1 | 9 |
| 2nd August | Attacks on shipping. | 477 | – | 4 |
| 3rd August | Attacks on shipping. | 415 | – | 4 |
| 4th August | Attacks on shipping. | 261 | – | – |
| 5th August | Attacks on shipping. | 402 | 1 | 6 |
| 6th August | Attacks on shipping. | 416 | 1 | 1 |
| 7th August | Attacks on shipping. | 393 | – | 2 |
| 8th August | Heavy attacks on shipping. | 621 | *20 | 31 |
| 9th August | Attacks on shipping. | 409 | *4 | 5 |
| 10th August | Attacks on shipping. | 336 | – | – |
| 11th August | Heavy attacks on shipping, Portland and balloons at Dover. | 679 | 32 | 38 |
| 12th August | Widespread attacks on shipping, radar stations, aerodromes and other targets. | 732 | 22 | 31 |
| Totals | 18,016 | 150 | 286 |
NOTE * Includes one at night.