18 Da

APPENDIX “C”

 

APPROXIMATE allotment of ammunition for various tasks.

 

N.B. This table is worked out for one gun of a wire cutting battery.

——————————————————————————————————-

DAY            TASK                                              18-prs         4.5”             T.M.

Hows             2”   240 mm

——————————————————————————————————

 

“U” day     Wire cutting 18-prs at rate                200

Of 200 rounds per gun.

&

U/V Night   Approaches & Communications

at night, about 2 Batts: per

Group, to consist of about               100              50

12 salvoes per hour.

N.B. Night from 8 PM to 5 AM.

 

18-prs preventing repair of wire.        20

——————————————————————————————————-

TOTAL          320           50

——————————————————————————————————-

Wire cutting.                                    200                                  100

 

O.Ps, Machine Gun

emplacements,                                                  100

Communication trenches.

“V” Day

&          Concentration of fire,

V/W Night   Right Group                                    10                10

 

Approaches & communications

at night.                                            100               50

 

Gas barrage if required.                      50              30

 

Preventing repair of wire

and trenches.                                      20

——————————————————————————————————-

TOTAL                380             190               100

——————————————————————————————————-

 

 

——————————————————————————————————-

DAY           TASK                                              18-prs         4.5”                T.M.

Hows             2”   240 mm

——————————————————————————————————

 

Wire cutting.                                   200                                  100

 

O.Ps, Machine Guns

Communication trenches.                                100                              30

“W” Day

&          Concentration of fire,

W/X Night   Left Group                                         10                10

 

Approaches & communications

at night.                                            100               50

 

Preventing repair of wire

and trenches.                                       30                10

 

Gas barrage if not fired on

Previous night.

——————————————————————————————————-

TOTAL                340             170               100           30

——————————————————————————————————-

 

 

Wire cutting.                                     200                                  40

 

O.Ps, Machine guns,

Trenches, etc.                                                    100                 40           30

“X” Day

&          Concentration of fire,

X/Y Night   one battery per Group                        10                10

 

Approaches & communications

at night.                                             100               50

 

Preventing repair of wire

and trenches.                                       30                10

 

Gas barrage if not fired on

Previous night.

——————————————————————————————————-

TOTAL                340             170               80           30

——————————————————————————————————-

 

——————————————————————————————————-

DAY           TASK                                              18-prs        4.5”                T.M.

Hows            2”   240 mm

——————————————————————————————————

Wire cutting.                                     200                                30

 

O.Ps, Machine Guns

trenches etc.                                                    100               30           30

“Y” Day

&          Concentration of fire,

Y/Z Night   Centre Group                                    10                10

 

Approaches & communications

at night.                                            100               50

 

Preventing repair of wire

and trenches.                                       40                20              30

 

——————————————————————————————————-

TOTAL                350             180               90           30

——————————————————————————————————-

 

 

“Z” Day       65 minute bombardment

up to             (at about 3 rounds per

assault           gun per minute (18-pr))                  200             125               30          10

——————————————————————————————————-

TOTAL                200             125                30           10

 

 

TOTALS per Gun previous to Assault.

 

 

18-prs         4.5”                T.M.

Hows                2”   240 mm

——————————————————————————————————

 

“U” Day &U /V Night                                          320                 50

“V” Day & V/W Night                                         380                190            100

”W” Day & W/X Night                                        340                170            100         30

”X” Day & X/Y Night                                          340                170              80         30

”Y” Day & Y/Z Night                                          350                180              90         30

”Z” up to assault                                                  200              125              30         10

——————————————————————————————————-

TOTAL               1930                 885           400       100

 

Rough estimate of expenditure from 0.00 to 2.30 and remainder of “Z” day and night.

 

During assault at rate of approximately

3 rounds per gun per minute 18-pr and                 500                  250

2 rounds per gun in minute for 4.5”

How:

 

For barrages, special undertakings etc.                 500                 250

——————————————————————————————————-

TOTAL                                                                 1000               500

Total up to 0.00 time.                                            2000             1000             430      100

——————————————————————————————————-

GRAND TOTAL                                                 3000              1500            430      100

=============================================================

 

(8) The above alterations will affect Appendix “C” slightly, Group Commanders should consequently consider these slight alterations:-

“V”. Concentration of Right Group should now be considered under “X” day expenditure, whereas the expenditure allowed for concentration on “X” day may now be cancelled.

 

An additional expenditure of 15 rounds of 18-pr and 10 rounds of 4.5” per gun should be added to “W”, “X” and “Y” days for intense bombardment in support of discharge of gas.

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