Barracks, billets etc is where they live. Army Training Regiment is where they train. Usually referred to as a camp or garrison etc.
Because the deep trenches protected them from bullets and shell fragments that were fired at the soldiers and so that the soldiers could be be seen (as targets).
in gallipoli and made out
in the trenches
I would expect most of them lived in France.
When the Nazis enforced them, they tried to get all of them to live in large, crowded areas called Ghettos.
Barracks.
Army barracks.
The live in buildings which are collectively called missions.
guards
On a Military Base, Soldiers' quarters are called Barracks. On some bases they are wooden structures that date back to WW2. On other bases, they are modern buildings.
It is called a barn
farm buildings are called barns where animals live.
They lived in houses called barracks.
Daddy Longlegs often live in large numbers in caves or other sheltered places.
A town is a large aggregation of houses and other buildings with political boundaries in which a large number of people live, work, and play.
This is called "quartering"