Complex sentence: In early 1939, he was finally allowed to introduce conscription to meet the threat of Germany with the Military Training Act of 27 April 1939 which required all men aged 20 and 21 to take six months military training.
Split into simpler sentences: In early 1939, he was finally allowed to introduce conscription to meet the threat of Germany with the Military Training Act of 27 April 1939. The act required all men aged 20 and 21 to take six months military training.