They employed a 75 mm gun , which was fired over open sights due to the closeness of the fighting , along with some 37 mm guns and a number of machine guns of varying calibre .
They fought fiercely .
Employing a 75 mm gun , which was fired over open sights due to the closeness of the fighting , along with some 37 mm guns and a number of machine guns of varying calibre , they fought fiercely .