The
First
World War:
The
Supreme
Test
701
The
number of
British
troops
on French and
Flemish
soil
was
more
than doubled
by
March
1915,
when
part
of their line
again
became
heavily
engaged.
The
additions
comprised
regulars
recalled
from
tropi-
cal
stations,
new
soldiers
enlisted at
home,
and
the
first Canadian
division,
which
had
spent
the winter
training
in
England.
In
the
second
Battle
of
Ypres,
April
1915,
the Canadians
met
the
first
gas
attack
in
the
history
of
warfare. Most of it fell
on
a French
African
division,
quickly
eating
a
hole four miles wide
in the
Allied
front,
right
beside
the
Canadian
division. In
the
days
that
followed,
marked
by
more
use
of the
horrible
new
weapon,
the
Canadians
were
nearly
surrounded but
they
would not
yield.
By
their
firmness
they prevented
a
disastrous
breakthrough. Supports, including
one
of
the Indian
divisions,
were
rushed
to the broken
line,
and contact
with
the French
was
re-established. This
engagement
cost
many
Canadian
battalions
more
than half
their
men. In
May,
as
part
of a
British offensive
de-
signed
to
aid
the
French
farther south and
to seize
a
commanding ridge
a few miles south
of
Ypres,
the Indians
9
and
the Canadians
again
went
into
action. Both
lost
heavily
and
the
Germans
kept
the
ridge.
Here
it
may
be well to
observe
an
exasperating
feature of
the
fighting
on
the
Western
Front. The
novel
combination of
machine
guns,
barbed
wire,
and trenches
gave
the defensive such
an
enormous
advantage
over
the
offensive
that
the initial war of movement
early
became
a
war
of
stalemate,
and
the
many
attempts
of each side
to break the deadlock
here
and there
along
the
line assumed
the
character
of mass suicide.
Air
power
was still
in its
infancy,
and
not
until
toward the
end
of
the
struggle
did
the
tank,
invented and
developed
by
the
British,
herald
a
return
to
a war
of
movement.
By
the
beginning
of 1916
the
British
had lost
more
than half
a
million
men on
the Western
Front;
yet
their
strength
there
had
risen
to
a
million,
and from
the
hard-pressed
French
they
had
taken over
more
of
the line. Their
portion
now extended from
Ypres
down to the
Somme,
and
they
had
thirty-eight
divisions
to
hold
it.
During
the next
six
months
these
were increased
to
fifty-seven.
Among
the
reinforce-
ments
was a
South African
brigade
of
four
battalions,
which had
fought
in
Egypt
and now
formed
part
of a Scottish
division
that
moved to the
9
In die autumn the two
Indian
infantry
divisions were transferred to
Mesopotamia,
where
they
could be
more
profitably
employed
and
more
easily
kept up
to
strength
by
drafts from
their
homeland.
The
two
cavalry
divisions were
retained in
France until
early
in 1918 without
getting
much
chance of
serving
as
cavalry
during
the
long
and
exhausting
stalemate oi
trench
warfare.