Civil War veterans were the first interest group to use their political pow
er to obtain substantial monetary transfers from the U.S. Treasury. Veteran
s supported the Republican party, and in exchange Republicans provided incr
easingly generous veterans benefits, placing a strain on the Treasury that
led toward a demand for increased taxes. Veterans also established a preced
ent that other groups could follow to petition the goverment for economic b
enefits, shaping the transformation of American government in the Progressi
ve era which led to the substantial growth of the federal government in the
20th century.