Weapons of WWI Crossword

This printable crossword puzzle on the topic of World War I has 12 clues. Answers range from 5 to 15 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

Used by British soldiers in the trenches
Needed 4 to 6 men to work them
A.k.a. the blimp carried machine guns and bombs
Causes a burning sensation in the throat and chest pains
Developed to cope with the conditions on the Western front
Used to deliver bombs in for spying
Used to blow up ships carrying supplies from America to Britain
Completely submerged in the sea and with torpedoes and or missiles
Network of countries for mutual protection
Area between opposing trenches
Germany, Italy, and Australia- Hungary in 1914
U. S. President who fought for peace