At 10am on 1 July 1918, the reconstituted headquarters of Fifth Army took over from First Army and the geographic sectors held by its XI and XIII Corps. Fifth Army Order No. , issued on 29 June, defined its order of battle at time of take over. All units and formations were transferred from First Army unless indicated. The Army’s headquarters was at Crécy-en-Ponthieu at the time.
Corps under Fifth Army command
- XI Corps
- comprising 5th, 61st (2nd South Midland) and 74th (Yeomanry) Divisions
- and Corps Troops
- XIII Corps
- comprising 3rd, 4th and 46th (North Midland) Divisions
- and Corps Troops
- 19th (Western) Division was due to join Fifth Army during the first week of July
Artillery
- The field artillery of 14th, 34th, 59th (2nd North Midland) and 66th (2nd East Lancashire) Divisions RFA
- 5th, 65th, 104th and 282nd Army Field Artillery Brigades RFA
- 11th Heavy Artillery Group
- comprising 18th Siege Battery, 456th Siege Battery and 544th Siege Battery and one section of 524th Siege Battery RGA
- 28th and 79th Mixed Brigades RGA
- 10th and 42nd Mobile Brigades RGA
- 22nd, 52nd and 70th Brigades RGA (9.2 inch howitzer)
- 48th Brigade RGA (8 inch howitzer)
- 498th and 521st Siege Batteries RGA (6 inch gun)
- Anti-Aircraft Artillery
- “B” AA Battery (sections 33, 101, 70, 142 and 220)
- “D” AA Battery (sections 18, 61, 89, 132, 218)
- AA Searchlight Sections 4, 14, 20, 44 and Portuguese Searchlight Company
- 913rd Garrison Guard Company (AA machine guns situated at Aire (Neufpre and La Laque), Ecquedecques, Marles-les-Mines and St. Leonard (SW of Marles-les-Mines)
Royal Engineers
- Field Survey Units
- 5 and 8 Observation Groups
- “DD” and “U” Sound Ranging Sections
- Army Troops Companies
- 42, 148, 284, 552 and 281 (from Fourth Army)
- Tunnelling Companies
- 250 Company (from Fourth Army) and 251 Company
- Port Construction Companies
- Half of No. 1 Company
- Foreway Companies
- 3 and 8 Companies
- Electrical and Mechanical Company
- 351 Company (from Second Army)
- Workshop Companies
- 5 Company (from Second Army)
- Other units
- 1 Pontoon Park (Horsed) (from Second Army)
- Half of 196 Land Drainage Company
Royal Engineers Signal Service
- Area Signal Detachments
- 11, 34 and 39 Area Detachments
- 5 Signal Construction Company
- 5 Light Railway Signal Section
- Pigeon Lofts
- 8, 11, 20, 45, 48, 51, 53, 69 and 121 Horse Drawn Lofts
- 3 Motor Loft
- R47 Stationary Loft
- Special Companies
- “M” and “G” Companies (both with XIII Corps at the time)
Royal Engineers Transportation
- 111, 279 and 5 Canadian Railway Construction Companies
- 1 Company of 3 Canadian Railway Construction Battalion
- 303, 308 and 345 Road Construction Companies
- 3 and 4 Portuguese Railway Troops Companies
- 51 Broad Gauge Operating Company ROD
- 7 and 10 Inland Waterways Repair Units
Infantry and Machine Gun Units
- “D” Company, 2nd Garrison Battalion, Oxfordshire & Buckinghamshire Light Infantry
- 39th Machine Gun Battalion MGC
Royal Army Medical Corps
- 8, 51 and 54 Casualty Clearing Stations
- 39 Stationary Hospital
- 22 and 25 Motor Ambulance Convoy
- 9 and 20 Mobile Laboratory
- 37, 57, 66 and 76 Sanitary Sections
- 5 Mobile Dental Unit
- 1 Advanced Depot of medical Stores
Supply, Transport and Ordnance Services
- 4 Field Supply Depot ASC
- 12 (Auxiliary) Horse Transport Company ASC
- 4 (Reserve) Mechanical Transport Company ASC
- 1 Section Anti-Aircraft Workshops
- 13, 16, 31 and 56 Light Ordnance Mobile Workshops AOC
- 13 and 18 Medium Ordnance Mobile Workshops AOC
- 1, 2, 8, 10, 17, 20, 21, 22, 27, 87 and 109 Ordnance Ammunition Sections AOC
Labour
- 25, 36, 68 and 69 Labour Groups
- 30, 56, 63, 64, 66, 71, 79, 102, 109, 118, 123, 130, 149, 159, 162, 179, 186, 189, 194, 195, 712, 721, 725, 733, 987 and 988 Labour Companies
- 736, 823, 832 and 946 Area Employment Companies
Royal Air Force
10th Brigade RAF, headquartered at Dennebroucq, assumed responsibility for Fifth Army front
- 10th Brigade
- 81st (Corps) Wing
- 21 Squadron (attached XIII Corps) and 42 Squadron (attached XI Corps)
- 89th (Army) Wing
- 2 Squadron and 103 Squadron
- 46 Squadron
- 4 Squadron AFC (from Second Army)
- 8th Balloon Wing
- 20 Balloon Company (34 and 48 Sections and 4 Section of 4 Company)
- 11 Balloon Company (40 and 47 Sections)
First Army assets not transferring to Fifth Army
- SOS School at Linghem
- Dumps west of Marles-les-Mines (temporarily) and at Rimeux
- Aerodrome at Serny
- Artillery range at Westrehem
- Advanced Section of No. 1 Royal Engineers Workshop at Fouquereuil
- Remount Staging Camp at Thérouanne
- Detachment of Whippet Tanks allotted to 46th (North Midland) Division would continue to be administered by First Army (temporarily)
- A brigade of 4th Canadian Division in XIII Corps area would continue to be administered by First Army (temporarily)