trench warfare
(noun) warfare in which opposing armed forces attack, counterattack, and defend from relatively permanent systems of trenches dug into the ground
glum
(adjective) feeling dejected
crump
(noun) a loud thudding sound
cowed
(adjective) intimidated
kindling
(verb) to light up
smug
(adjective) self-satisfaction
lad
(noun) a young man
campaigner
(noun) a person who actively promotes the goals of a cause (in this case, war)