The boys are having their own war when a war/military ships saves them.
The irony of the fire is that Ralph kept insisting that the fire will get them rescued and Jack didn't care, but in the end, the fire that Jack started was the fire that got them rescued.
an army submarines pulls up on the beach, saving the boys
make a fire on the hill.
Good Will Hunting
No, the boys will never be safe from themselves
Golding might have used a warship to rescue the boys because this would facilitate the adult who rescued them be a person of higher authority, e.g. a Navel Officer would be a greater sign of dominance rather then a civilian. On the other hand it could be seen as a form of irony, either the boys, who were waring against each other, were rescued by a symbol of war. Or that because the whole of the novel is an analogy for the beginning of the Second World War then to have them belittled by a military figure is, again, ironic.
As long as the fire is lit, the boys have hope they will be rescued. Ralph, wishing to maintain order in the group until they are rescued, constantly impresses the importance of the fire to the others, but, even though Ralph tried his best, the fire, or hope of being rescued, was extinguished from the island.
The two goals that Ralph identifies among the boys are to have fun and to be rescued.
During wartime countries can (and do) require able bodied men that are old enough to serve in their military, This was done by both the Confederate and Union governments. It is called conscription, or being drafted.
in the beggining, yes. towards the end, their attitudes change
The boys might not be rescued due to various factors such as difficult terrain, limited resources, weather conditions, or challenges related to the rescue operation. It can also be affected by the complexity of the situation and the time it takes to plan and execute a successful rescue.
the story is told by ralph and the other boys are sentenced to life in prison while the leader is sentenced to death