Objective To explore the epidemiological characteristics of osteochondritis of tibial tubercle by investigating the disease incidence in 3000 infantrymen Method Investigations from letters were used together with physical examnation to find out the correlation of onset numbers with age, training time and sources of soldiers Result the disease incidence in infantrymen was 2.

In this case,the West Wei made some changes of its military composition and formed its main force from the Han infantrymen.

The Reason and Counterplan of the Infantry Troops Physical Strength Depletion during the Attack Battle;

The Roman Legion is a term that can apply both to the entire Roman army, and also, more narrowly and more commonly, to the heavy infantry that was the basic military unit of the ancient Roman army in the period of the Roman Republic and the Roman Empire.