Agree with you that international rules and laws like geneva
convention are for academic discussion. It would be your conscience
that decide if you would sleep well after the war, not who gave the
order or whether you would be tried for the action you took or did
not take.
If you were given the order to shoot and you had all the chance in
the world to stop the vehicle, but you turned around and argue with
your commander instead, the vehicle went past your sentry, drove 50
meter inside and exploded, hundreds of people whom you know were
killed or wounded, how would you feel? your commander was killed so
nobody would be there to prosecute you for not taking order.
On the other hand, you took the order and fired just one short at
the vehicle, its petro tank exploded and the people inside burn to
death. The people later confirmed to be some new contractors coming
to work inside the camp. How would you feel? I believe blaming the
commander would not erase the screaming of the people burnt to
death right in front of you.
The lower the ranking, the fewer information the soldiers have to
decide what is a legal or illegal order. Commanders, with more
information, better training, are expected to give orders for good
reasons, and soldiers are expected to just comply without
questioning. But it would be our conscience to question what are
orders for good reasons. Orders to kill enemies unarmed with their
hands up, women, children, babies, old folks are never for good
reasons, by any standard of any civilization.

What are illegal orders? I believe our constitution calls on the
SAF to protect the lives and properties of Singapore, besides the
sovereignty of the Republic. What if you were given order to fire
at some protestors taking part in a demonstration against the
government, like what happened in Thailand, would you fire?
What if the
government mobilize the SAF to fight for Taiwan, alongside the US,
when war broke out across the straits? would you report to the
mobilization? Are these kinds of orders legal, in view of the
nature of war and the role of the SAF specified in our
constitutions?
