With no explanation, label each line with "event-attack/battle/war/militaryconflict", "O", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Due
to
the
denuding
of
the
Indian
Army
caused
by
commitments
overseas
during
the
First
World
War
,
many
of
the
battalions
employed
in
this
campaign
were
second-line
units
with
disproportionately
large
numbers
of
very
young
soldiers
with
inexperienced
officers
.
Due:O
to:O
the:O
denuding:O
of:O
the:O
Indian:organization-other
Army:organization-other
caused:O
by:O
commitments:O
overseas:O
during:O
the:O
First:event-attack/battle/war/militaryconflict
World:event-attack/battle/war/militaryconflict
War:event-attack/battle/war/militaryconflict
,:O
many:O
of:O
the:O
battalions:O
employed:O
in:O
this:O
campaign:O
were:O
second-line:O
units:O
with:O
disproportionately:O
large:O
numbers:O
of:O
very:O
young:O
soldiers:O
with:O
inexperienced:O
officers:O
.:O