Men serving in the Territorial Force got new numbers in 1917 and a great deal can be determined about their service from these numbers. This page should help you understand what it all means.
Many people know that "in early 1917 all TF soldiers were allocated new 6 digit numbers". As with anything involving the administration of an organisation as complex and idiosyncratic as the British Army, it isn't quite that simple. These pages, kindly provided for the Long, Long Trail by Jock Bruce, are an attempt to explain the system.
Numerous different numbering systems
to the end of 1916 men in each TF unit (infantry battalion,
artillery brigade, field ambulance, etc) were numbered using
a system unique to that unit - often by allocating
the number 1 to the first man to join the unit on its formation
in 1908 and continuing from there. In some cases the system
was a continuation or variation of that used by the Volunteer unit on which the new TF one was based. In other words there could be a Private 1234 in the 4th Battalion of the Umpshires and another in the 5th Battalion, as well as all the Privates 1234 in other TF units in other regiments.
What happened when a man changed units
a man moved between TF units, even between battalions of the
same regiment, he was renumbered. This was adequate for
peacetime but not for the different circumstances of war.
Renumbering resulted in inevitable errors and confusion, and
an administrative burden. This became worse as the number
of transfers between TF units (and between TF and non-TF units)
increased after changes in regulations allowed the compulsory
transfer of TF men to units other than the one in which they
Changes are made
In late 1916 and early 1917 a new numbering system was promulgated in five Army Council Instructions (ACIs), each one covering a different arm of service and each with a date of implementation some weeks or months in the future. There were several further ACIs intended to clarify and refine the instructions for renumbering. The pages dealing with individual arms include all these amendments up to December 1918. The ACIs differed in detail but followed the same general pattern. They defined who was to be considered a regular or TF soldier for the purposes of renumbering, allocated blocks of numbers to TF units for renumbering their soldiers and set out the rules for future numbering changes.
To understand the new system it is necessary to understand some of the terminology used. The following are simplified definitions -
The definition of who was a TF man and who was a regular for the purposes of the initial renumbering was standard for all arms. It was based purely on the type of unit in which a man happened to be serving at the time, rather than what form of attestation he had signed at enlistment and it did not alter the terms and conditions under which he served. Confusingly, subsequent changes of a man's number could be determined by his type of attestation.
TF soldiers were defined as (1) all soldiers serving in TF units at the time of renumbering who had either
And (2) all soldiers belonging to TF units who were temporarily attached to other units or corps.
All other soldiers were considered as regulars are were not affected by the renumbering.
By the date specified for his particular arm of service, every TF soldier was renumbered, receiving a six-digit number (five-digit in the case of some Yeomanry units) from the block of numbers allocated to his unit. The block of numbers allocated to a unit was used for all parts of the unit - 1st, 2nd and 3rd lines, the depot, men on TF Reserve, men temporarily disembodied and men temporarily attached to other units and corps. The distribution of numbers to the different elements of a unit followed no set pattern.
A TF soldier now retained this number as long as he continued to serve in a particular corps, even if he was posted to another TF or regular unit in that corps. He would only be renumbered if he transferred to another corps.
The ACIs are sometimes contradictory, are susceptible to different interpretations and there were doubtless many errors made by the clerks responsible for actually executing the changes.
Researchers should be cautious about drawing too many conclusions about an individual based solely on the TF number allocated to him - a close reading of the rules will show that a man could be allocated a TF number without serving in the unit concerned.
The blocks of numbers allocated to each TF unit can be seen by clicking our links at the top right of this page.
|Tip for family historians|
If your soldier has a six-digit number (not including any prefixes) he was almost certainly a Territorial. Prior to the new numbers being issued, TF soldiers had numbers of up to four digits. If only the six digit number appears on his medal index card, he did not go overseas until after the new numbers were issued to the regiments.
|Another tip for family historians|
But my soldier died in 1916 - why has he got a 1917 number? It is fairly common to encounter cases where men killed some time before the number change have been renumbered. The usual explanation is that they were still officially missing, not yet confirmed dead, and were still 'on the books' when new numbers were issued (although I am aware of one man who died in UK in March 1916 and was still allocated a six-digit number!).
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