par Jean-Louis Vial
The platform of
battery
During sieges the batteries of mortars
were installed on wooden platforms and protected by a
parapet as built for cannons but without
embrasures.
The construction of a mortar battery
began by the construction of the parapet that measured 3
toises thick and 7 1/2 pieds high. This parapet was made of
earth and bundles of wood called in French "fascine", the
workers took the earth in the front of the battery making
there a small ditch and they made alternately a coat of
fagots and a coat of earth. The pioneers laid down the
bundles of wood according to their length in the width of
the parapet, they fixed them with stakes, likewise they put
fagots in cuff, that was to tell laid down according to
their length along all sides of the parapet equally fixed
with stakes.
To construct the platform the workers
began packing the earth to give a slope of four pouces from
front to rear. The floor was usually composed with wood
beams in 7 or 9 pouces square and 6 to 10 pieds length (
according to the piece) redoubled in cross, beams were fixed
by wood stakes and interstices were filled in with earth
just above girders level. The distance between two mortars
was of 15 or 16 pieds.
Loading
implements for a mortar
A rammer witch had the same gauge than
the mortar to force earth and forage which covered the
powder.
A iron scraper of 2 pieds length with at the other end a
small spoon to clean the bore and the chamber of the
mortar.
A small spoon to clean more particularly the powder
chamber.
A wooden knife of 1 pied length to squeeze earth around the
shell.
A gimlet to clean the vent of the mortar.
Some wooden quoins.
Two shot firers, called in French "boutefeu", that had wick
lightened on both ends.
A spade.
A stretcher to carry shells or hooks with a wooden stake to
carry shells by its "ears".
Five good handspikes to serve quickly the mortar in
battery.
Loading implements were tidied ahead the
mortar against the retaining wall of the parapet. On right
hand three handspikes, a stretcher, a spade and a rammer. On
left hand two handspikes, a scraper, a wooden knife, aiming
quoins and a hoe peak. The two shot firers were raised back
of the mortar at 9-10 pieds of the platform.
Shell was a hollow iron globe filled with
a powder bursting charge that was exploded by a time wooden
fuse.
Loading
implements for pierrier
The implements used for pierrier were the
same as for mortar, it was necessary to add baskets of 15 to
20 pouces in diameter by 20 pouces in high and wooden trays
that had a slightly inferior diameter than the caliber of
the pierrier, and at 10-15 pas behind the battery four dump
wagons filled with stones to fill 60 baskets that were
necessary for each pierrier.
Firing
manoeuvre
Within each artillery battalion or
brigade were constituted companies of bombardiers
specialised in the implementation of mortar and pierrier
pieces.
In December 1756 there existed 30 bombardier companies of 50
men each, in November 1758 the companies were reduced to 16
but their strength raised to 100 men by company. November
1761 saw the creation of 3 brigades for the service of the
navy to secure coasts, each of these brigades had a
bombardier company.
To serve the mortar the crew was of five
men including the officer.
The officer having ruled the powder charge which was
necessary, the soldier at left and ahead went to get the
black powder to the reserve, he transported it in a small
bag or his hat, he put this powder in the chamber of the
mortar, after that the officer ordered to cover it with
forage that he made packed it with a rammer, the soldier
covered forage with two or three earth shovelfuls also
packed. Meanwhile the two bombardiers placed at the rear
were going to get the shell with a stretcher or a stake with
a hook to hang it by its "ears", they put down the shell
into the bore of the mortar, placing it straightest that it
was possible, the fuse up. The first soldier at right put
earth in the mortar while the soldier at left with a knife
squeezed the shell to fix it in the right position. After
that each men took a handspike to install the mortar in the
firing axis. The officer ruled the tilt of the mortar, the
two soldiers ahead passed their handspike under the bulge of
the mortar to lift it or to decline it, the soldier at left
and rear took aiming quoins to put them under the bulge of
the mortar following indications of the officer. After that
a soldier pull back the protection of the fuse, another
cleaned the vent of the mortar with a gimlet and filled it
with very fine black powder. Then the two soldiers at the
right took shot firers, the first lighted the fuse while the
second lighted the mortar. Immediately after the shot the
soldiers at ahead straighted up the mortar vertically with
handspikes, and the two soldiers at rear clean promptly the
bore and the the chamber of the mortar, the officer having
ruled the powder charge which was necessary
.......
To aim mortar the officer used a quadrant
with a pendulum to measure the degree of elevation of the
mortar, the soldiers passed their handspike under the bulge
of the mortar to lift or to decline it, they put aiming
quoins under the bulge of the mortar following the
indications of the officer. To kept the firing axis despite
the height of the parapet there were two small stakes
sticked at the top of the parapet, after each shot the men
put this landmarks and the mortar back in alignment swinging
the mortar on its platform with handspikes.
The powder reserve was placed at 15-20
pas behind the battery the soldiers accessed there by a
trench protected by wooden boards or fagots and covered with
earth or skins from oxen that the army ate and that
artillery officers took care to salvage. Shells were tidied
near the powder store at 5-6 pas.
The service of pierrier pieces required
only three men, the sequences of firing maneuvres were
similar that of mortar.
Jean-Louis Vial
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