 Jaksch opposed the growing influence of Nazis in Sudeten German Politics.After Germany invaded Czechoslovakia in March 1939 Wenzel escaped to Poland, and after the German invasion of Poland to Great Britain, where he represented the interests of the Sudeten Germans in the Czechoslovak government-in-exile.During the war Jaksch's relations with the Czechs became strained as he opposed to acknowledge the pre-Munich borders of Czechoslovakia of his homeland.