German invasion of the Netherlands
The Dutch Artillery had 676 howitzers and field guns: 310 Krupp 75 mm field guns; 52 105 mm Bofors howitzers, the only really modern pieces; 144 obsolete Krupp 125 mm guns; 40 150 mm sFH13's; 72 Krupp 150 mm L/24 howitzers and 28 Vickers 152 mm L/15 howitzers.