Blitzkrieg is an anglicized word describing all-mechanized force concentration of tanks, infantry, artillery and air power, concentrating overwhelming force and rapid speed to break through enemy lines, and once the latter is broken, proceeding without regard to its flank. Through constant motion, the blitzkrieg attempts to keep its enemy off-balance, making it difficult to respond effectively at any given point before the front has already moved on. During the interwar period, aircraft and tank technologies matured and were combined with systematic application of the German tactics of infiltration and bypassing of enemy strong points.