REQUIRED FOR THE ATTACK OF A MODERN FORTRESS. 107 
To meet sorties both breaching and demolition batteries must be 
provided with case, at 10 rounds per piece this amounts to :— 
Case shot:—Heavy Howitzer , 200. Medi'Um Howitzer , 840. 
For the light howitzers (36) of the 2nd position not yet provided for, 
an average of 30 rounds a day, per piece, will be sufficient, which 
gives :—• 
Common shell :—Light howitzer , 21600. 
The field guns (24) only now remain to be estimated for; a less average 
than in the preceding, or 24 rounds a day, per piece, will suffice for 
these and we may consider them, in emplacements or lodgements, to be 
in action for half the duration of the siege.* This amount may be 
divided in the proportions of T V common shell, To shrapnel, To case. 
We have then :— 
Common shell:—Field guns , 764. 
t Shrajmell shell :— ,, 5348. 
fCase shot :— ,, 1528. 
Summing up we find :— 
The total probable amount of ammunition for the train should 
CONSIST, AT A MINIMUM, OF THE FOLLOWING ROUNDS, namely :- 
H. Gun. 
M. Gun. 
F. Gun. 
H. How. 
M. How. 
L. How. 
Double shell :—■ 
— 
— 
— 
85536 
51840 
— 
Common .shell :— 
68948 
58080 
764 
8352 
23904 
27648 
Shrapnell shell :— 
3628 
12960 
5348f 
1728 
3168 
— 
Case shot :— 
280 
720 
1528f 
248 
484 
— 
72856 
71760 
7640 
95864 
79396 
27648 
or a total of 355164 rounds.{ 
Of this ammunition, under ordinary conditions, half would be an 
ample supply with the train, as a store to commence the siege with; 
this gives, taking an average on the whole of each nature without refer¬ 
ence to particular application :—■ 
* The firing of these pieces will of necessity be very variable. 
f If mitraillenses were snbstitnted for some of the field guns, ammunition for them 
wonld replace a portion of this. 
X In addition, there will be required spare barrels of powder, rockets, &c., &c. At 
Strasburg, “ there were 241 pieces placed in battery outside the walls; during the 31 days 
over which the regular operations extended, these fired 193,722 rounds.”—The Franco- 
German War, by Capt. Hozier. 
During the whole of the war 1870-71, the Prussian Artillery sent into France but 800 
pieces, with a supply of 973,901 rounds, which was not entirely consumed. 
