Maybe now that the "light footprint" guys are out of the way, we can get a good estimate from the military.
Know much about this 101st guy?
There are troop surges, and then there are troop surges, in military history. Some radically alter the calculus of the battlefield. Others simply add to the stasis and sense of quagmire, ending up as nothing more than preludes to defeat.
The Allied offensives of August and September 1918 that finally broke the Kaiser’s armies followed from a surge of thousands of fresh American troops into the western front. But the victory wasn’t due just to the increase in numbers. After all, the Germans themselves the previous spring had tried to break through the Allied trenches with thousands of additional storm troopers freed from the Russian Front. The difference was that the Allies created a new unified command structure under Gen. Foch, employed greater combined use of tanks, exploited the element of surprise by means of shorter bombardments, and depended on much better organized logistics to sustain initial breakthroughs.
From VDH today:
http://article.nationalreview.com/?q=MWRjYTAzMDlkNWVkOTZkZTU0NGI5NzU3NGI5MDgxYjA=