Some useful terms to help you understand the book more clearly.
Jackboots - A person who uses bullying tactics, especially to force compliance. (Bully).
Pharmacist - A person licensed to prepare and dispense drugs and medicines.
Himmler - German Nazi leader. Second in power to Hitler, he directed the Nazi elite forces, the SS.
Swaggered - To walk or conduct oneself with an insolent or arrogant air; strut.
Pendulum - A body suspended from a fixed support so that it swings freely back and forth under the influence of gravity, commonly used to regulate various devices, especially clocks.
Flailing - To wave or swing vigorously; thrash. (Flail)
Blotted - To darken; make dim; obscure or eclipse (Blot).
Flamethrower - A weapon either mounted or portable, that sprays ignited incendiary fuel for some distance.
Veering - To turn aside from a course, direction, or purpose; swerve. (Veer).
Deport - To send or carry off; transport, esp. forcibly. (Expel).
Smokestack - A pipe for the escape of the smoke or gases of combustion, as on a steamboat, locomotive, or building. (Vent).
Resettlement - The transportation of people as a family or colony to a new settlement. (Immigration).
Groped - To feel about with the hands; feel one's way. (Grope).
Silhouette - A dark image outlined against a lighter background. (Outline).
Mimicking - To imitate or copy in action, speech, often playfully or derisively. (Copy).
Locomotives - A self-propelled vehicle, usually electric or diesel-powered, for pulling or pushing freight or passenger cars on railroad tracks. (Locomotive).
Trudging - A laborious or tiring walk; tramp. (Trudge).
Hawking - The act of selling goods for a living. (Salesman).