I have noticed that, in my current game as Nationalist China, my offensives in Manchuria are being hindered by a -20% surprise modifier. Now, this can make all the difference between getting reinforcements to the front, and sometimes between victory and defeat. Assuming that 'surprise' ties into the detection technologies, and that many of these give the enemy a detection bonus, wouldn't it make sense to fix these technologies, and thus not suffer from a surprise hit while attacking every bloody time?