Only illegal orders.
A soldier would not only be justified it would be his duty to disobey an unlawful order.
When training has been completed, soldiers are given orders for their permanent duty station.
In a war there is no right or wrong. A soldiers' duty is to protect him/her self and his/her comrades and follow orders unless the orders come from a disreputable source. In a civil context you would be justified shooting someone only for self protection, though this would depend on which country you live in.
Active Duty Operational Support orders
The calling of soldiers into active duty is called MOBILIZATION.
Fallen soldiers are soldiers who have died in the line of duty.
The calling of soldiers into active duty is known as mobilization.
There position was to do their duty; they did their duty.
length of duty
ITDY is similar to temporary duty (TDY), which the Navy calls temporary additional duty (TAD), but there is no specified time period and no end-date in the orders. ITDY orders are issued to service members going on temporary duty when the return date is unknown. A modification or follow-on orders are required for the member to go to their permanent duty station (PDS).
The South African army has about 67,000 active duty soldiers. There is another 15,000 soldiers that are on reserve duty.
China, they have an estimated 2,285,000 soldiers on active duty.