Why was West Germany’s membership in NATO controversial in the 1950s?

In the 1950s, the prospect of West Germany’s membership in NATO was highly controversial due to widespread unease in Western Europe regarding the rearmament of a nation that had been a primary aggressor in World War II.12

While Western leaders recognized that West German military strength was essential to defend against a potential Soviet Union invasion, the memory of recent conflicts made the idea of a new German army deeply unsettling. France, in particular, was initially resistant to German rearmament, fearing for its own security. Efforts to integrate German forces into a broader international structure, such as the proposed European Defense Community, ultimately failed when the French parliament rejected the plan in 1954.12

To resolve these concerns, the Paris Agreements of 1954 were established. These agreements ended the Allied occupation of West Germany and allowed for its accession to NATO under strict conditions, including the limitation of its armaments and the placement of its armed forces under Allied command. West Germany officially joined the alliance in May 1955.123