Napoleonic era military records

[pinefamily]

I'm posting here rather than the Armed Forces section because I have no experience in this area and am seeking guidance and advice.
I have an ancestor, John Cartwright Blake, who I cannot find a death/burial for.  I know he signed up as an ensign in 1783 in the 60th Foot, but don't know how long he served for, as he married in Dorset in 1790. He is also described as a gentleman in a 1794 land record. There is a John Blake, no middle name, signing up as an ensign in the Sherborne Loyal Volunteer Corps in 1798 His widow remarried in 1805.
Are there any records of deaths if he has died in service? I know this is a long shot, but I haven't been able to locate a burial otherwise.
Thanks in advance.

[GrahamSimons]

Ensign translates as 2nd Lieutenant now. Officers are traceable. His commissions will have been published in the London Gazette, searchable (not terribly reliably) online, and his career will also show in the Army Lists, some of which are available online and are on the shelves at the National Archives and Society of Genealogists, no doubt also elsewhere; also on digital microfilm from the National Archives.
This guide is helpful:
http://www.nationalarchives.gov.uk/help-with-your-research/research-guides/british-army-officers-1913/

[pinefamily]

Thank you Graham. As I said above, I have no experience in this area and need all the help I can get.
That gives me a starting point.

[Bookbox]

I have an ancestor, John Cartwright Blake, who I cannot find a death/burial for.  I know he signed up as an ensign in 1783 in the 60th Foot

It seems he was in the 27th Foot (not the 60th). Newspaper thumbnails can be misleading.

Norfolk Chronicle, Saturday 19 July 1783
WAR OFFICE. July 12th. PROMOTIONS
[including]
27th Reg. Foot, Capt. James Hamilton, on half-pay in the late 73d Reg. to be Captain Lieutenant; John Cartwright Blake, Gent. to be Ensign.
60th Reg. Foot, 1st Battallion, William Bradshaw Clinton, Gent., to be Ensign.

[pinefamily]

Good pick up, thank you Book box. That saves me going down the wrong path.

[ShaunJ]

He's mentioned as an ensign in 1782 in this history of the Royal Berkshire Militia

https://archive.org/stream/historyroyalber00thoygoog/historyroyalber00thoygoog_djvu.txt

[ShaunJ]

He's in the March 1786 Army List ( J Cartwright Blake) but he is not in the February 1787 edition.

[ShaunJ]

In fact he was replaced in 27th Foot in February 1786:

https://www.thegazette.co.uk/London/issue/12726/page/70

[pinefamily]

Thank you ShaunJ. That's a resource I will be making more of.
Interesting to see he was only briefly in the 27th Foot.