Wiktionary
so much as
adv. 1 (context idiomatic English) even; suggests a minimum, especially regarding what might be expected. 2 but rather
Usage examples of "so much as".
So was the sight of John Gillman standing at the top of the ridge, He was carrying a rifle loosely in one arm, and she knew if they so much as moved he only had to raise the rifle and pull the trigger.