Ridicule for pacifism
Kingsley is mistreated by the public and ridiculed because the public opinion is largely in support of a war that Kingsley himself wants no part in. This leaves him in an ironic position, because he is supposed to lead the people, but instead, he is forced into a corner by the populace. Not only that, but he is in this sticky situation solely because of his belief that war is not a wise way to settle disputes. He is leading his people away from bloodshed and mayhem, but they want the mayhem, so his pacifism is like a noose around his own neck.
The imprisoning prisoner
When Kingsley is subjected to imprisonment, he is at serious risk because of this irony: he was responsible for putting many of these criminals behind bars. Now, as a draft dodger with no friends and little to no public support, he is at the whim of those whom he himself imprisoned. He is suddenly in a very risky situation, and he can't navigate it perfectly. He is attacked several times and he becomes a punching bag for the disenfranchised in the jail.
The false death
Kingsley is saved by an act of intentional dramatic irony; the Home Office (like Homeland Security) design a ploy to kidnap him from jail and fake his death. The public and the jail officials are misled, assuming that he has died. He gets away to live under cover as an investigator. There has been a murder and they need his help to solve the death. There is a situational irony here as well, because his fake death is designed to help him solve a real murder.
The subjected leader
When Kingsley is suddenly in the food chain of government again (no longer a hotshot like before), Captain Shannon afflicts him with abrasive leadership. His domineering approach to supervision makes them into near enemies. For Kingsley, this is hard to stomach, because he wants to do a good job, but he realizes that authority structures are not as rewarding above him as they were below him. He ends up spending most of his energy avoiding Captain Shannon instead of solving the case.
Abercrombie's drama
Through a revelation of dramatic irony, we learn what became of Abercrombie. He was a poet and a pacifist (a thematic return to the original plot of the novel). He was also gay, and in his poetry he wrote very passionately about his political views and personal views. This led to his untimely death in a military hospital where some bigoted person assassinated him for his homosexuality or his political views. This is a startling discovery for Kingsley who shares those political views.
