During the late 1940s and early 1950s, the prospect of communist subversion at home and abroad seemed frighteningly real to many people in the United States. These fears came to define–and, in some cases, corrode–the era’s political culture. For many Americans, the most enduring symbol of this “Red Scare” was Republican Senator Joseph P. McCarthy of Wisconsin. Senator McCarthy spent almost five years trying in vain to expose communists and other left-wing “loyalty risks” in the U.S. government. In the hyper-suspicious atmosphere of the Cold War, insinuations of disloyalty were enough to convince many Americans that their government was packed with traitors and spies. McCarthy’s accusations were so intimidating that few people dared to speak out against him. It was not until he attacked the Army in 1954 that his actions earned him the censure of the U.S. Senate.
He used the excuse of protecting his own nation.
Treaty of Versailles banned Germany from using much armed force,and limit it's army to 100000 men,along with the rules of not allowing navy, air force and limited the amount of heavy weapon.
When Hitler took over Germany,he used the excuse of defending from other nations to start producing weapons, navy and air force again as it was greatly disarmed and unable to protect itself if invasion occur.
Hope it helps!
To "quarter" soldiers (or to provide quarter to soldiers) means to give them lodging, usually in a private home. This has been mandated by governments throughout history in times of emergency.