Chamberlain pursued a policy of appeasement and rearmament. This was the first step of its postwar rearmament. They marked the beginning of German naval rearmament after the Treaty of Versailles. Germany started to build destroyers again during the 1930s as part of Hitler's rearmament program. The Wehrmacht officers made a number of demands for West German rearmament to begin. Hitler completely rejected the idea of controlled rearmament under foreign supervision. A period of frantic diplomatic efforts and rearmament followed. However, Hitler, suspicious of a French rearmament, declined ratifying the agreement. Brauchitsch welcomed the Nazi policy of rearmament. As part of Hitler's secret rearmament program, Krupp expanded from 35,000 to 112,000 employees. Serbia and JNA used this discovery of Croatian rearmament for propaganda purposes. The Labour Party strongly opposed the rearmament programme. The Colombian government responded with offensive strikes, killing FARC members destined to lead rearmament activities. In the aftermath of Munich, Chamberlain continued to pursue a course of cautious rearmament. From 1935 onward, the government progressively increased its control over industries engaged in rearmament.