Watch “Getting Ready To Play Tannenberg Test Game Series #8, a game designed by Jum Dunnigan, back in 1969.,” a board game video on BoardGameVideo.
Description provided by Nangwaya on YouTube:

1969Jim Dunnigan
About Tannenberg, from BoardGameGeek:
Designer
Jim Dunnigan
Artist
Redmond Aksel Simonsen
Publisher
Poultron Press
Categories
Mechanics