1937 when chiang is wondering about what to do, the german advises him to attack to the east. the germans always tell you to attack to the east. [laughter] he also acquired a lot of german arms and equipment. they had trade, they gave the germans tungsten, and the germans sent supplies. and then, of course, the whole eshoo of hitler's allies -- issue of hitler's allies with japan kicked in, and at that point hitler ordered the german advisers to be pulled out, and they were. many of them reluctantly. chiang then turn today soviet advisers, including some very distinguished officer of the red army are going to become prominent in world war ii. but, yes, there is a time when the german add advisers are very prominent and important to china. >> rich are, the next question is on line. it might be the last question, but it comes from a text from my buddy, dave walker. i'd like to let the crowd here know, but more importantly the crowd watching online, dave has been in charge of our social media here at the museum for over four years, and this week is his final week here, and tonigh