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D/DLI 7/805/73 Officers of ‘D’ Company, 14th
Battalion, Durham
Light Infantry, 1916
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A few people have asked me about how, for example 8th
Battalion, fits into the larger scheme of things. My first thought was ‘that’s straightforward’
but it can get complicated quickly. To some
extent, it depends how much you want to know.
Firstly, I’ll be talking about the Infantry, things will vary for other
types of unit.
In the First World War the British Army was organised into a
number of separate Armies, dedicated to fighting or home service operations.
Working from the top down, each Army was subdivided into a
hierarchy of units. An infantry regiment
and its constituent battalions fit midway between the top level (Army) and the
smallest (Section).
Army
Corps
Division
Brigade
Regiment
Battalion
Company
Platoon
Section
It is important to note that whilst the others are all
fighting units, the regiment was only an organisational unit. A regiment, such as the Durham Light
Infantry, never fought altogether as one entity.
As we hold the Regimental archive for the Durham Light
Infantry it is the one I know most about and will be using for examples. Not all of its battalions were formed
immediately as the war began (and some were in existence beforehand), but at
its largest, there were over 30 battalions at home and overseas.
Above the regimental level is where it becomes complicated as not every battalion was in the same brigade/division/corps. What’s more, battalions changed brigade,
brigades changed division, and divisions changed corps due to the requirements
of battle. Below battalion level,
companies could be attached to battalions of other regiments but this was a
temporary arrangement.
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D/DLI 2/20/5(30) ‘A’ Company, 20th Battalion,
Durham Light Infantry, taken United
Kingdom, [1916]
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The Armies are the top level (though they still came under
the authority of the government department of the War Office). The First to Fifth Armies were formed between
1914 and 1916, the British Salonika Army formed in 1915. The First to Third Home Forces Armies formed
in 1914 and disbanded at the end of 1915/early 1916, replaced by the Northern
and Southern Home Forces Armies in early 1916.
A battalion could be an Army Troop – not part of the intermediate unit levels
– in November 1916 2/9th DLI became part of the British Salonika
Army.
In this context, corps refers to the unit comprising two or
more divisions and commanded by a Lieutenant General. There were also supporting troops that came
under direct control of the corps. The
Army Service Corps, for example, used the term differently and were not part of
this hierarchy.
Commanded by a Major General, divisions were the basic
fighting units of the army and moved around as such; the 5th
Division was in France and
Flanders, then moved to Italy. Some battalions, such as 1/7th DLI
in November 1915 and 1/9th in February 1918 became Pioneer
battalions which were Divisional Troops.
Pioneer battalions worked on building and maintaining the infrastructure
and came under the supervision of the division, and were thus not part of a
brigade.
Brigades were commanded by Brigadier Generals and were
typically formed of four battalions (reducing to three in 1918).
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D/DLI 7/426/155 13 Platoon, ‘D’ Company, 2nd
Battalion, Durham Light Infantry, taken behind the line at Loos, France,
1917
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At full strength, a battalion had about 1000 officers and
men led by a Lieutenant Colonel; there were four companies in a battalion, four
platoons in a company, and four sections in a platoon.
Explanation of 1/9th, 2/9th, 3/9th: The Territorial Forces were volunteer
battalions of part time soldiers that existed before the war. In the Durham Light Infantry,
there were five territorial battalions, the 5th to 9th. The Territorials were mobilised at the outbreak of the
war (see the posts on the Second Battle of Ypres for more about this). As the majority of
these men volunteered to go abroad, a second line reserve unit was raised for
each of the territorial battalions for home service.
As these became active on home service, third line units were formed as
another reserve. Many second line units
ended up going abroad eventually. The
third line units were either disbanded or in the case of the DLI, merged into
other units, in 1916.
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D/DLI 2/1/268(21) Sergeants of 1st Battalion,
Durham Light Infantry, taken at Nowshera,
India, 1916
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It is worth mentioning that not all battalions existing in
the army between 1914 and 1918 were considered as fighting in the First World
War. The army had units in India for
example and this is where 1st Battalion DLI spent the war
period. The men serving here were
entitled to the British War Medal as this was given for overseas service. To confuse matters, some were also entitled
to the 1914-15 Star and the Victory Medal.
These medals applied to service in a theatre of war and some areas of India were
classed as such. This included the 1st
Battalion DLI who took part in fighting on the North West Frontier with the 1st
(Peshawar)
Division.
It is possible to go further into the different types of
battalion at which point it gets ever more complex. As a reference I have used
The Long, Long Trail website which I can highly recommend to find out more about what I have
been writing about and more information about the brigades, division etc.
that battalions were in. A good starting
point is their
Order of Battle page.