 What effect do the bombs have on the war?
Images began to appear, drawn from inexhaustible files, wherein are kept all thoughts, past, present, and future.... World War III had been declared, and he had enlisted, receiving his old rank of captain. It caught the shadows of the fire and reflected them, greatly magnified, over the room. Three days later they had landed in Spain, merged with another division, then crossed the Pyrenees into France, and finally to Paris where the fighting had begun. Already the city was a silent graveyard, littered with the rubble of towers and cathedrals which had once been great. The Russians had not yet used the H-bomb; the threat of annihilation by the retaliation forces had been too great.
 They end the war, but turn it into a semi-apocalyptic landscape.
 They end the war but turn the world into a zombie landscape.  They end he war and restore peace and harmony, even though there are still some stragglers wandering home from the war.  They end the war, but turn it into a semi-apocalyptic landscape.  They end the war, but turn the world into tribal groups with strict borders.