the 2 extra infantry does not appear on the list of national objectives and bonus income on page 23
i assume that page lists the NO’s for europe, since japan is not on the list.
for sovjet union it only says:
+5 ipc if there are no axis warship on seazone 125, SU controls archangel and no other allies present on SU ground
+3 for any original german territory and sovjet controls its own.