How did the modern military salute come from?

Military salute used to refer to military etiquette. One of the Five Rites of the Western Zhou Dynasty was used for conquering and was a ceremonial ceremony in military activities. Military salute is the etiquette of soldiers; Etiquette in the army Including hand-raising ceremony, eye-catching ceremony and gun-holding ceremony. The origin of the hand-raising ceremony can't be verified, and there are usually two statements:

1. Soldiers of the Roman Legion (or knights and warriors who participated in the tournament in medieval Europe) raised their hands to block the sun, to show their respect for their superiors (or ladies who watched the tournament);

2. It has the same meaning as shaking hands, and shows the other party that they have no weapons in their hands. However, a more correct and well-founded statement is that in medieval Europe, when knights met on the road, they would lift their helmets with their right hands to show their respect, and this action evolved into a hand-raising ceremony later.

Extended information:

The essentials of standard military hand-raising ceremony:

The upper body is upright, the right hand is quickly lifted, the five fingers are naturally straightened together, and the middle finger is slightly connected to the right corner of the brim about 2 cm (the temple is the same height as the eyebrow when wearing a hat or without a military hat), and the palm is downward and slightly outward (about)

Baidu Encyclopedia-military salute

Baidu Encyclopedia-Raise your hand.