Outside of the relationship of a knowledgeable, caring adult with kids - none of it actually matters.

1. The Game
2. Tommy's Tongue
3. WW1 Encyclopedia
4. Great War Curriculum
5. Great War Resources

Z - Zebra

Z:

Z-hour; zero hour. The time that an attack or event was to happen.

Zig - Zag:

Drunk, intoxicated. From the tendency to stagger back from the estaminet in a zig-zag fashion.