Between 1878 and 1898, all muster rolls and pay lists are in series WO 16 irrespective of army division which makes research more straightforward. However, from 1888, only muster rolls exist as pay lists were no longer maintained.
You may also find a decline in the number of musters up to 1898 as from that date, the War Office no longer maintained them. There may be some challenges associated with using documents in series WO16 as a result of the Cardwell and Childers re-organisation of the Army from 1881.
The Childers reforms of 1881 led to major changes within infantry regiments. Infantry regiments, which until this time had been identified by numbers (e.g.41 Foot) were known as county regiments. Some original foot regiments were paired together to form the new county regiments. Each ‘new’ regiment had two battalions and all infantry regiments were placed into numbered regimental districts. To find the relevant regimental district numbers, use the key found in the record summary of WO 16.
After 1880, most volumes include several organisational tables at the beginning; these show the line infantry regiments with their pre-1881 designations and include their militia and volunteer battalions. The old regimental numbers of the 2nd battalion are also given for ease of identification when trawling through the earlier musters.
British regimental districts organized the infantry into local territorial areas to strengthen recruiting ties between specific counties and regiments.
Initially, sixty-nine districts were created, focusing on strengthening the links between regiments and their assigned areas. Regimental Districts acted as the administrative centre for records and recruitment, and they are often identified by a number or letter.