What would I write for Trench Warfare during WWI?

Read up on trench warfare.

http://www.google.com/search?source=ig&hl=en&rlz=1G1GGLQ_ENUS374&q=trench+warfare&aq=f&aqi=g10&aql=&oq=&gs_rfai=CAwVq8WAETM-uGYm2hQSQ76yqCAAAAKoEBU_QyC3D

Can you imagine being confined to a hole in the ground for hours or days or even weeks?