Focus rack of sharp blade to engraving on M3 fighting knife used in World War 2 by the American Military

knife sharp blade engraving military world war 2 war world american army army american m3 trench m3 fighting knife fighting stab stabbing defense attack marine corps marines marine combat black fight weapon arm old antique history historical replica soldier steel metal edge hand to hand danger dangerous safety training macro close up shallow depth of field museum used focus rack focus pull