Teddy Roosevelt. Outlays went from $525M to $485M in his first budget year.
Warren Harding. Outlays went from $5,062M to $2,908M in his four budget years.
Harry Truman. Outlays went from $92,569M to $65,956M in his two terms.
=====================================================
T. Roosevelt's term followed the Spanish-American War. (1898-1899)
------------------
Harding's term followed WWI. (1917-late 1918)
--------------------------------
Truman's followed WWII. (1945-1950)
If you subtract the funding for the military, I think you will find that that the rest of the government did not shrink.
Note that Reagan and Olebush, despite their smaller government ideology, did not put it into practice, and neither will McCain.
Maybe CU4 will manage this, if he manages unite with another Christian or two...