Army general is a title used in many countries to denote the rank of general nominally commanding an army in the field. Army general is normally the highest rank used in peacetime.
The equivalent position in the Commonwealth, U.S., and several other countries is simply termed general, four-star rank, or informally "full general".
The title "army general" should not be confused with the rank "general of the army", which is more senior, and corresponds to other countries' marshal or field marshal.