General is a high military rank, in most nations the highest rank, although some nations refer to high-ranking generals as marshals. The title general is used by land and sometimes air forces. In the navies of the world, the rank of full admiral is equivalent.
... translation would be "I pervade all this universe...".
"mat-sthaani" in the second line is a compound
of "mat" (me) and "stha" (standing, staying at) and
means "they ...