All or None
When you have an array of opportunities to take advantage of, but all
of them would leave you open to some sort of counterattack by a
collective pool of enemy resources, take either none of the
opportunities or all of them.
If the German airforce is reduced to a single bomber and the Allied
navy is reduced to two transports, and there is an opportunity to
attempt an invasion of both Western Europe and Southern Europe, but you
are hesitant to expose those lone transports to the German bomber, then
either invade both, or none.
By invading both, Germany can allocate his bomber to either
transport, but not both (and one of them gets a free pass). If you only
invade one, then Germany doesnít have to make a choice at all, and
none of your transports gets a free pass (the worst possible scenario).
If you invade neither, then Germany canít attack either of them and
the bomber spends the turn doing nothing.
If you are the Russian player and each turn Japan takes three
territories along your border, using a couple of infantry and allocating
2 fighters against each, then you are in an all-or-none situation. Japan
has a total of 6 fighters that can be allocated anywhere along the
front. If you retaliate by taking all three territories, then Japan has
to stretch their forces to the maximum in order to achieve their goal,
which means they must allocate 2 fighters into each battle.
If you only retaliate by taking one of the territories, then Japan is
free to send all 6 fighters against that one territory, which may likely
kill everything on the first turn, minimizing Japanese casualties.
Youíre better off as the Russian player to either defend all three
territories, or defend none of them. Defending them all stretches the
Japanese out; defending just one or two allows the Japanese to have
concentration of force; defending none of them keeps the Japanese from
making use of their planes at all.
If youíre the US player and are hesitant to invade Western Europe
because of the tanks sitting in Germany ready to counterattack, but the
UK player goes ahead and takes Eastern Europe, exposing themselves to
those same tanks, then that should make it even more palatable for you
to invade Western Europe. The German player is then forced with either
only counterattacking one of the territories (giving the other allied
player a free pass) or must divide his tank forces, which weakens both
of his attacks.