Before the war, between 1936 and 1939, Poland invested heavily in the Central Industrial Region. Preparations for a defensive war with Germany were ongoing for many years, but most plans assumed fighting would not begin before 1942. To raise funds for industrial development, Poland sold much of the modern equipment it produced.Seidner, The Polish Army had approximately a million soldiers, but less than half were mobilized by 1 September. The Polish military had fewer armored forces than the Germans, and these units, dispersed within the infantry, were unable to effectively engage the enemy.Seidner,Marshal Edward Śmigły-Rydz Rydz and the defence of Poland, pages 270–94
