Kohl participated in the late stage of WWII as a teenage soldier. He joined the Christian-Democratic Union (CDU) in 1947.
Kohl would go on to leave the Christian-Democratic Union five years after joining it in 1947. 
( z1 go-on :ARG1 ( z2 leave :ARG0 ( z3 person :name ( z4 name :op "Kohl" ) ) :ARG1 ( z5 political-party :name ( z6 name :op "Christian-Democratic" :op "Union" ) ) :time ( z7 after :op ( z8 join :ARG0 z3 :ARG1 z5 :time ( z9 date-entity :year 1947 ) ) :quant ( z10 temporal-quantity :quant 5 :unit ( z11 year ) ) ) ) )