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| Date from | Date to | Event | Source | |
|---|---|---|---|---|
| 16.7.1739 | Entered the Navy | ODNB | ||
| 1744 | Passed the Lieutenant's Examination | RNLPC | ||
| 12.8.1745 | Lieutenant ADM 6/16/256 | ADM 6/16 | ||
| 5.11.1745 | Commander ADM 6/17/17 | ADM 6/17 | ||
| 5.11.1745 | 9.4.1746 | Baltimore (14), Commander and Commanding Officer ADM 6/17/17 | BWAS-1714 | |
| 10.4.1746 | Captain ADM 6/17/85 | CSORN | ||
| 10.4.1746 | 11.9.1747 | Triton (20), Captain and Commanding Officer ADM 6/17/86 | ODNB | |
| 3.5.1746 | Wounded in the head an action against French privateers in a loch in the Sound of Arisaig | ODNB | ||
| 11.9.1747 | 29.10.1748 | Rippon (54), Captain and Commanding Officer ADM 6/17/266 | ODNB | |
| 29.10.1748 | 12.7.1749 | Cornwall (80), Captain and Commanding Officer ADM 6/17/484 | BWAS-1714 | |
| 14.3.1750/51 | 20.5.1752 | Glory (44), Captain and Commanding Officer ADM 6/17/543 | ODNB | |
| 3.6.1752 | 21.8.1754 | Dolphin (24), Captain and Commanding Officer ADM 6/18/36 | ODNB | |
| 20.1.1755 | 13.6.1757 | Dunkirk (60), Captain and Commanding Officer | ODNB | |
| 6.6.1755 | 8.6.1755 | Action of 6-8 June 1755 | ||
| 13.6.1757 | 27.1.1762 | Magnanime (74), Captain and Commanding Officer ADM 6/18/409 | BWAS-1714 | |
| 23.9.1757 | Attack on Isle d'Aix | |||
| 6.7.1758 | Appointed 4th Viscount Howe | ODNB | ||
| 7.8.1758 | Pallas (36), as Flag Officer, Commodore | BWAS-1714 | ||
| 20.11.1759 | Battle of Quiberon Bay | |||
| 27.1.1762 | Appointed Commander-in-Chief — Basque Roads ADM 6/19/382 | ADM 6/19 | ||
| 22.6.1762 | 2.1763 | Princess Amelia (80), Captain and Commanding Officer ADM 6/19/418 | BWAS-1714 | |
| 1765 | 5.8.1799 | Appointed Privy Counsellor | EWIKI | |
| 18.10.1770 | Rear-Admiral of the Blue ADM 6/20/302 | CSORN | ||
| 26.11.1770 | 1776 | Appointed Commander-in-Chief — The Mediterranean Sea ADM 6/20/317 | ADM 6/20 | |
| 31.3.1775 | Rear-Admiral of the White ADM 6/21/83 | CSORN | ||
| 7.12.1775 | Vice-Admiral of the Blue ADM 6/21/155 | ADM 6/21 | ||
| 2.1776 | 12.1778 | Eagle (64), as Flag Officer, Vice-Admiral of the Blue | BWAS-1714 | |
| 15.2.1776 | 9.1778 | Appointed Commander-in-Chief — North America ADM 6/21/158 | ADM 6/21 | |
| 2.4.1776 | Vice-Admiral of the White ADM 6/21/175 | ADM 6/21 | ||
| 12.5.1778 | Vice-Admiral of the Red ADM 6/21/403 | ADM 6/21 | ||
| 22.7.1778 | Commanded the British Fleet at the Encounter at Sandy Hook | |||
| 11.8.1778 | Commanded the British Fleet at the Howe's encounter with d'Estaing | |||
| 14.8.1778 | Centurion (50), as Flag Officer, Vice-Admiral of the Red | BWAS-1714 | ||
| 1782 | 1783 | Appointed Commander-in-Chief — English Channel | EWIKI | |
| 8.4.1782 | Admiral of the Blue | CSORN | ||
| 20.4.1782 | 14.11.1782 | Victory (100), as Flag Officer, Admiral | W009 | |
| 9.1782 | 12.1782 | Commander of the Fleet for the relief of Gibraltar 1782 | ||
| 20.10.1782 | Commanded the The Main Squadron - Lead Division at the Battle of Cape Spartel | |||
| 30.1.1783 | 10.4.1783 | Appointed First Lord of the Admiralty | OHMB4 | |
| 10.12.1783 | 16.7.1788 | Appointed First Lord of the Admiralty | OHMB4 | |
| 24.9.1787 | Admiral of the White | CSORN | ||
| 1788 | Created 1st Baron Howe | EWIKI | ||
| 1788 | Appointed 1st Earl Howe | EWIKI | ||
| 5.1790 | 10.1790 | Queen Charlotte (100), as Flag Officer, Admiral of the White | BWAS-1714 | |
| 7.1790 | 8.1790 | Victory (100), as Flag Officer, Admiral | W009 | |
| 9.6.1792 | 3.1796 | Appointed Vice-Admiral of Great Britain | EWIKI | |
| 1793 | 1795 | Appointed Commander-in-Chief — English Channel | EWIKI | |
| 2.1793 | 1799 | Queen Charlotte (100), as Flag Officer, Admiral of the White | BWAS-1714 | |
| 1.6.1794 | Commanded the British Fleet at the Glorious 1st of June | |||
| 23.6.1795 | Action of Ile Groix | |||
| 1796 | 1797 | Royal George (100), as Flag Officer, Admiral of the Fleet | BWAS-1714 | |
| 12.3.1796 | Admiral of the Fleet | CSORN |