Why does the navy have two sets of uniforms?

According to the 07 military uniform system, it can be divided into two types: short-sleeved all-white military uniform in summer and dark blue military uniform in spring, autumn and winter. Queue outfit: all-white uniform in spring and autumn. So there are strict rules about where to wear, what color to wear and what style to wear.

The navy part of Type 07 military uniform is extremely complicated, which can be roughly divided into formal clothes (all white), uniforms (one in spring and autumn and one in winter), summer clothes (one in long sleeves and one in short sleeves), training clothes (one in navy blue and one in marine camouflage), auxiliary clothes (officers' sweaters, soldiers' sweaters, officers' woolen coats and soldiers' Parker cotton coats) and so on.

The navy is an ancient arms, and the eastern Mediterranean is the birthplace of the world navy. ?

The history of the navy can be traced back to 2000 BC. At that time, warships were paddle boats, and collision was the basic combat method. By the middle of17th century, the sailboat fleet gradually replaced the paddle fleet, and Britain, France, Spain and the Netherlands began to establish a standing navy. /kloc-In the second half of the 8th century, the colonial wars of capitalist countries and the independence wars of North American colonies accelerated the development of the navy.