At that time, Tadaoki was an influential daimyo (feudal lord) of Toyotomi and had his wife and father in Kyoto, and so the other daimyo were paying close attention to his next move, however, the prompt announcement of his intention to join the Eastern army is therefore said to have influenced other daimyos who has been under Toyotomi's patronage.
このとき、豊臣恩顧の有力大名であるうえ、父と正室が在京していたため、その去就が注目されたが、東軍に入ることをいち早く表明したため、他の豊臣恩顧の大名に影響を与えたと言われている。