The one exception to this depicted similarity is that a lot more Japanese in the movie are willing if not eager to kill themselves for reasons of honor than would be true of Americans. Not just in cases like a kamikaze pilot being willing to die in order to take even more of the enemy with him, but even in ways that are militarily deleterious. Like if they just lost a skirmish, instead of making the most of the opportunity to fight again since they’re still alive, many of the Japanese want to immediately kill themselves to atone for losing.
The "Guidelines for the Conduct of the Troops in Russia" issued by the OKW on 19 May 1941 declared "Judeo-Bolshevism" to be the most deadly enemy of the German nation, and that "It is against this destructive ideology and its adherents that Germany is waging war".  The guidelines went on to demand "ruthless and vigorous measures against Bolshevik inciters, guerrillas, saboteurs, Jews, and the complete elimination of all active and passive resistance."  Influenced by the guidelines, in a directive sent out to the troops under his command, General Erich Hoepner of the Panzer Group 4 stated: