Criminality is not at issue here. Don't come into this country calling the men and women who serve it ignorant, just because you came from a country where the military lacked enough discipline to enforce the obedience of orders to it's troops. An effective military cannot afford to tolerate insubordination to this degree, because if there are two soldiers on the battlefield, and one refuses to act because it violates his/her conscience, then both are dead. The real criminal act is the cowardice of the insubordinate one because he/she has caused the death of their comrade.
Polish soldiers were very good. They defeated Soviet Army in 1920 and stopped the Communist advance into Europe. They fought bravely ALONE against Germans in 1939 and they lost only because they were outnumbered, did not have the comparable equipment and they got attacked from the East by Soviets. Then later many Poles crossed the borders illegaly and joined Western armies. Polish units fought in Italy, in air battle for England, in Northern Africa and other places. Blind obedience is not a requirement for being a good soldier.