This monograph focuses on the strategic concepts, planning and the limited success of the Polish military, leading up to the British Guarantee of March 1939 and then throughout the Second World War. The monograph discusses the valuable contribution of the Polish Military to its two Western allies, France and the United Kingdom leading up to the war, and the respite they received due to Poland's spirited defense that degraded German offensive capability by at least half a year. Recreated in France, the Polish Military conceptualized a liberation policy of encouraging both France and the United Kingdom to undertake a Balkan Strategy to Poland's freedom. Polish relations, with Hungary in particular, and Romania, while British relations with Greece and Turkey, made this a promising policy option. In early 1941, Britain did send troops to aid Greece and the Poles were also about to send their Middle East-based force to Greece. This Balkan