http://www.diplomacy-archive.com/diplomacy_rules.htm
1971GRI
p.9
"3. CIVIL DISORDER
If [a player leaves] the game, or otherwise fail to submit orders [in] a given Spring or Fall [season], it is assumed that [civil] government [in his country] has collapsed. [His] units hold in position, but do not support each other. If they are dislodged, they are [disbanded]. No new units are raised for [this] country.
[A player who temporarily fails to submit orders may, of course, resume play if her returns to the game and has some units left. It is probably more desirable, if sufficient persons are present, to allow a person who has not previously had a country (or failing that, whose country has already been eliminated from play) to replace any player who has left the game.] Players should decide what policies they will follow [in this regard in advance of] starting the game.
4. CIVIL-DISORDER REMOVALS
If a country in civil disorder has to remove units, [because it has lost supply centers], the units farthest from [home (most distant from the nearest home supply center as computed by the shorted available route, including convoys) is] removed first[, the fleet before the army]. If [more] units are equally [eligible for removal than should be removed, priority is established by the names of the space in which they are located, the earliest] in alphabetical order [coming off first]."
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Learnt something new about the Dip Rules yesterday...Spaces with 2 Coasts
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