The Field Survey units of the Royal Engineers

Siege artillery

The Field Survey at the start of the war

On 1 August 1914 there were three Field Survey Companies, all at home, their troops being employed on work for the Board of Agriculture and Fisheries. On mobilisation, two were split up and the men sent to coastal units.

Pre-war regular Field Survey Companies
CompanyNotes
13th CompanySplit into half-companies on mobilisation and men sent to coastal garrisons. Once relieved in those duties by Territorials, came back and converted to become 13th Base Park Company. Went to Egypt.
14th CompanySplit into half-companies on mobilisation and men sent to coastal garrisons. Once relieved in those duties by Territorials, came back and converted to become two Army Troops Companies (one being 37th AT Company RE) for service in Egypt.
19th CompanyHalf of this unit was converted to become 46th Advanced Park Company. Went to Egypt. Rest stayed in England and was based at Southampron, beocoming a depot unit for all other Field Survey units.

The developing role of the Field Survey

Especially once the war in France had ceased to be one of movement and the deadlock of entrenched positions had begun, the artillery lost most of its ability to fire at targets that could be directly observed. Enemy artillery and other positions were out of sight, requiring indirect firing. The ability to know very accurately where your own position was, where the enemy was and the general lie of the ground became of increasing importance. Surveying the ground, creating maps and identifying the position of the enemy even when he could not be seen became the job of a new type of Field Survey Company.

Four companies were formed in France in March 1916 and were organised as RE units by July, although a fixed establishment was not defined until February 1917. They each comprised a Headquarters, Topographical section, Map section, Observation section and Sound-ranging section. Some of the various sections already existed and were absorbed into the new companies. The Army Printing Sections were also added into the Field Survey Companies later on, principally to organise production of the tens of thousands of maps that needed to be issued. Three more Companies were also formed and moved to other theatres.

CompanyLocation in 1918
1st Field Survey CompanyBased in France.
2nd Field Survey CompanyBased in France.
3rd Field Survey CompanyBased in France.
4th Field Survey CompanyBased in France.
5th Field Survey CompanyBased in France. War diary exists.
Field Survey DepotBased in France. It was located at Montreuil but moved to Campignelles-les-Grandes in the winter of 1917/18.
6th Field Survey CompanyBased in Italy.
7th Field Survey CompanyBased in Egypt.
8th Field Survey CompanyBased in Salonika.

Reorganisation as the Field Survey grows and matures

In May 1918, the Companies in France were reorganised into Field Survey Battalions, comprising a Headquarters (this including the surveying and printing sections), two Artillery Sections (incorporating the sound-ranging and observation sections) and a Corps Topographical Section. There was one each for the five British Armies. For tactical purposes they were placed under the General Officer Commanding Royal Artillery in each Army. Three additional Sound-ranging Sections were also created for other theatres.

Field Survey Battalions
BattalionStructure in 1918
1st Field Survey BattalionIn First Army. Comprised “H” – “L” – “P” – “T” – “Y” & “Z” Sound Ranging Sections and Nos 4, 10, 11, 18 and 21 Observation Groups.
2nd Field Survey BattalionIn Fifth Army. Comprised “DD” – “J” & “U” Sound Ranging Sections and Nos 5, 8, 9 and 27 Observation Groups
3rd Field Survey BattalionIn Third Army. Comprised “C” – “CC” – “D” & “F” Sound Ranging Sections and Nos 15, 16, 17, 19 and 20 Observation Groups
4th Field Survey BattalionIn Second Army. Comprised “BB” – “GG” – “I” – “M” – “S” & “W” Sound Ranging Sections and Nos 1, 3, 6, 7, 12 and 23 Observation Groups
5th Field Survey BattalionIn Fourth Army. Comprised “A” – “B” – “G” – “K” – “O” & “R” Sound Ranging Sections and Nos 2, 13, 14 and 24 Observation Groups
Depot Field Survey BattalionBased in France.

Links

The Royal Engineers

How the British artillery developed into a war-winning weapon