5. Barbed Wire
• Protected gunners and
trench lines infantry
attacks and rushes from
enemy soldiers
• Could not be defeated by
heavy artillery, but would
later be defeated by
tanks
6. Heavy Artillery
• Large, heavy, cannon-
like weaponry
• Needed railways for
transport
• Expensive
• Accurate, long-range
weapons – could fire
shells over 12 miles
12. Chemical Warfare: Gas
• Deadly chlorine gas
and later mustard gas
became lethal killers
as they were
unleashed upon
opposing armies
• Gas masks became
standard issue
• Physically deadly and
psychologically harmful
• First use of chemical
warfare
18. Submarines
• German U-Boats
particularly effective
due to speed and
stealth
• Operated primarily on
the surface, then
submerged to attack
• More than 5,000 Allied
ships were sunk by
German U-Boats
26. Communication Devices
• Messages were
communicated through:
– Telephone and radio
– Flashing mirrors
– Flashing lights
– Motorcycles
– Courier pigeons
– Human runners
– Dog messengers
28. Aircraft
• Airplanes first used
for reconnaissance
missions (surveying
enemy territory
and activity).
• Near the end of the
war, airplanes were
used to shoot and
drop bombs.
33. Aircraft
• Zeppelins were
introduced by the
Germans
• Used for
reconnaissance, to
carry heavy equipment.
and to bomb and shoot
down enemies.
• Germans killed over
500 British in bombing
raids
