London Gazette takes a bit of practice to plumb. There are at least 12 references, & I suspect more
eg
3rd Volunteer Battalion, The Prince of Wales's
Own (West Yorkshire Regiment);
The undermentioned second lieutenants to be
Lieutenants:—
S. S. Sykes. Dated llth August, 1906.
and his commission
3rd Volunteer Battalion, The Prince of Wales's
Own (West Yorkshire Regiment); Samuel
Stanley Sykes, Gent, to be Second Lieutenant.
Dated 30th December, 1905.