Editing World in Flames (section)

== Supply ==

Supply is an important "World in Flames" concept. Each unit must be able to trace a line to a primary supply source, which is any friendly-controlled city in its home country or a cooperating Major Power, or to a secondary supply source which is itself in supply. The line cannot pass through an enemy-controlled hex, or the hex next to an enemy corps (which exerts a Zone of Control) unless this is occupied by a friendly land unit. (Each hex is controlled by whichever side passed a land unit into or through it most recently.) This line can only be four hexes long on the European map or two on the Asian/Pacific map, and is further restricted in bad weather or desert, but it may cross any number of sea zones free of uncontested enemy naval units or naval bombing factors. A supply path may only have one seaborne section, which must always pass from the source through a port, and through another port at the receiving end unless the unit is on a seacoast.

A secondary supply source is any headquarters unit or capital of a country controlled by the same Major Power as the unit, or any headquarters unit or capital of a conquered country controlled by a cooperating Major Power. The supply requirements for secondary supply sources are the same as for regular units, except that the path from a secondary to a primary supply source may be extended by any length of railroad (which is a permanent feature of the map) subject to the same enemy interference as the other hexes on the path.

An out-of-supply unit cannot attack and cannot move without being flipped over or "disrupted". A disrupted, out of supply unit is very easy to destroy.