The US Congress in the 1920s and 30s was far less generous to veterans than were post-Civil War and post-WWII congresses. Some states made modest ex gracia payments to WWI veterans, but the Federal government dithered and delayed. Most veterans received little or no pension of other payments, and these were delayed. There have been a number of books published on the 1932 WWI Veterans' Bonus March on Washington. LGS