The London Gazette gives details of Officers of the Army and Navy appointments, promotions and resignations and is available free online to seach and see copies of the original pages (pdf) that can be down loaded. Though this is an important resource not everybody is aware that it is avilable.
You can search by name, year/s and so forth. You can also search for bankrupts and debtors as well as retired members of the Civil Service who were given medals to recognise their service. This included such people as Postmen, Police, Messengers, Plumbers and Shipwrights to mention just a few. The search page can be found at London Gazette
This site is worth looking at if you had an ancestor who was a Blacksmith or just checking if one of you ancestors is listed. Blacksmiths in Kent and many other counties are listed, plus any details that are known. This index is growing and includes other countries such as America and Australia. There are also other indexes for Coopers, Farriers and Millwrights just to name a few. Blacksmiths Index
RNLI Memorial. to all lifeboat personnel who have lost their lives since the foundation of The RNLI in 1824 .
The RNLI memorial sculpture at Poole, Dorset, is the only place where all of them who lost their lives are named together. You can download the full list at RNLI Memorial